212021110122 has 32 divisors (see below), whose sum is σ = 424754744832. Its totient is φ = 70555025904.

The previous prime is 212021110109. The next prime is 212021110129. The reversal of 212021110122 is 221011120212.

It is a super-2 number, since 2×212021110122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212021110129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13700233 + ... + 13715699.

It is an arithmetic number, because the mean of its divisors is an integer number (13273585776).

Almost surely, 2^212021110122 is an apocalyptic number.

212021110122 is an abundant number, since it is smaller than the sum of its proper divisors (212733634710).

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

212021110122 is a wasteful number, since it uses less digits than its factorization.

212021110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19162.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212021110122 its reverse (221011120212), we get a palindrome (433032230334).

The spelling of 212021110122 in words is "two hundred twelve billion, twenty-one million, one hundred ten thousand, one hundred twenty-two".