212110022120220 has 72 divisors (see below), whose sum is σ = 735314743354464. Its totient is φ = 48482290770048.

The previous prime is 212110022120207. The next prime is 212110022120261. The reversal of 212110022120220 is 22021220011212.

It is a happy number.

212110022120220 is a `hidden beast` number, since 2 + 121 + 100 + 221 + 2 + 0 + 220 = 666.

It is a super-2 number, since 2×212110022120220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212110022120193 and 212110022120202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84170642439 + ... + 84170644958.

It is an arithmetic number, because the mean of its divisors is an integer number (10212704768812).

Almost surely, 2^{212110022120220} is an apocalyptic number.

212110022120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212110022120220 is an abundant number, since it is smaller than the sum of its proper divisors (523204721234244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212110022120220 is a wasteful number, since it uses less digits than its factorization.

212110022120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168341287419 (or 168341287414 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212110022120220 its reverse (22021220011212), we get a palindrome (234131242131432).

The spelling of 212110022120220 in words is "two hundred twelve trillion, one hundred ten billion, twenty-two million, one hundred twenty thousand, two hundred twenty".