210022021111212 has 72 divisors (see below), whose sum is σ = 534152577381696. Its totient is φ = 69576988833504.

The previous prime is 210022021111163. The next prime is 210022021111229. The reversal of 210022021111212 is 212111120220012.

210022021111212 is a `hidden beast` number, since 2 + 10 + 0 + 220 + 211 + 11 + 212 = 666.

It is a super-2 number, since 2×210022021111212² (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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 627162883 + ... + 627497669.

It is an arithmetic number, because the mean of its divisors is an integer number (7418785796968).

Almost surely, 2^{210022021111212} is an apocalyptic number.

It is an amenable number.

210022021111212 is an abundant number, since it is smaller than the sum of its proper divisors (324130556270484).

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

210022021111212 is a wasteful number, since it uses less digits than its factorization.

210022021111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441867 (or 441862 counting only the distinct ones).

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

Adding to 210022021111212 its reverse (212111120220012), we get a palindrome (422133141331224).

The spelling of 210022021111212 in words is "two hundred ten trillion, twenty-two billion, twenty-one million, one hundred eleven thousand, two hundred twelve".