212021111001012 has 48 divisors (see below), whose sum is σ = 510692279322624. Its totient is φ = 68391526140000.

The previous prime is 212021111000971. The next prime is 212021111001017. The reversal of 212021111001012 is 210100111120212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212021111000982 and 212021111001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021111001017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797887 + ... + 20607737.

It is an arithmetic number, because the mean of its divisors is an integer number (10639422485888).

Almost surely, 2^{212021111001012} is an apocalyptic number.

It is an amenable number.

212021111001012 is an abundant number, since it is smaller than the sum of its proper divisors (298671168321612).

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

212021111001012 is a wasteful number, since it uses less digits than its factorization.

212021111001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19838660 (or 19838658 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212021111001012 its reverse (210100111120212), we get a palindrome (422121222121224).

The spelling of 212021111001012 in words is "two hundred twelve trillion, twenty-one billion, one hundred eleven million, one thousand, twelve".