211220002111212 has 72 divisors (see below), whose sum is σ = 553699481187216. Its totient is φ = 70405708405248.

The previous prime is 211220002111207. The next prime is 211220002111219. The reversal of 211220002111212 is 212111200022112.

211220002111212 is a `hidden beast` number, since 21 + 1 + 220 + 0 + 0 + 211 + 1 + 212 = 666.

It is a super-2 number, since 2×211220002111212² (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 not an unprimeable number, because it can be changed into a prime (211220002111219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71785348 + ... + 74669780.

Almost surely, 2^{211220002111212} is an apocalyptic number.

It is an amenable number.

211220002111212 is an abundant number, since it is smaller than the sum of its proper divisors (342479479076004).

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

211220002111212 is a wasteful number, since it uses less digits than its factorization.

211220002111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959789 (or 2959775 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211220002111212 its reverse (212111200022112), we get a palindrome (423331202133324).

The spelling of 211220002111212 in words is "two hundred eleven trillion, two hundred twenty billion, two million, one hundred eleven thousand, two hundred twelve".