212021020122 has 8 divisors (see below), whose sum is σ = 424042040256. Its totient is φ = 70673673372.

The previous prime is 212021020093. The next prime is 212021020147. The reversal of 212021020122 is 221020120212.

It is a sphenic number, since it is the product of 3 distinct primes.

212021020122 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17668418338 + ... + 17668418349.

It is an arithmetic number, because the mean of its divisors is an integer number (53005255032).

Almost surely, 2^212021020122 is an apocalyptic number.

212021020122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212021020122 is a wasteful number, since it uses less digits than its factorization.

212021020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35336836692.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212021020122 its reverse (221020120212), we get a palindrome (433041140334).

The spelling of 212021020122 in words is "two hundred twelve billion, twenty-one million, twenty thousand, one hundred twenty-two".