212021211012 has 48 divisors (see below), whose sum is σ = 544106825472. Its totient is φ = 63849265920.

The previous prime is 212021210953. The next prime is 212021211019. The reversal of 212021211012 is 210112120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021210982 and 212021211000.

It is not an unprimeable number, because it can be changed into a prime (212021211019) 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, 14451289 + ... + 14465952.

It is an arithmetic number, because the mean of its divisors is an integer number (11335558864).

Almost surely, 2^212021211012 is an apocalyptic number.

It is an amenable number.

212021211012 is an abundant number, since it is smaller than the sum of its proper divisors (332085614460).

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

212021211012 is a wasteful number, since it uses less digits than its factorization.

212021211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28917308 (or 28917306 counting only the distinct ones).

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

Adding to 212021211012 its reverse (210112120212), we get a palindrome (422133331224).

The spelling of 212021211012 in words is "two hundred twelve billion, twenty-one million, two hundred eleven thousand, twelve".