211213012122 has 24 divisors (see below), whose sum is σ = 523003649376. Its totient is φ = 60346574856.

The previous prime is 211213012081. The next prime is 211213012151. The reversal of 211213012122 is 221210312112.

211213012122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211213012122² (a number of 23 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 = 211213012095 and 211213012104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 838146748 + ... + 838146999.

It is an arithmetic number, because the mean of its divisors is an integer number (21791818724).

Almost surely, 2^211213012122 is an apocalyptic number.

211213012122 is an abundant number, since it is smaller than the sum of its proper divisors (311790637254).

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

211213012122 is a wasteful number, since it uses less digits than its factorization.

211213012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676293762 (or 1676293759 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211213012122 its reverse (221210312112), we get a palindrome (432423324234).

The spelling of 211213012122 in words is "two hundred eleven billion, two hundred thirteen million, twelve thousand, one hundred twenty-two".