212012011012021 has 32 divisors (see below), whose sum is σ = 245332556611200. Its totient is φ = 181073713766400.

The previous prime is 212012011012007. The next prime is 212012011012103. The reversal of 212012011012021 is 120210110210212.

It is a cyclic number.

It is not a de Polignac number, because 212012011012021 - 2⁷ = 212012011011893 is a prime.

It is a super-2 number, since 2×212012011012021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212012011011986 and 212012011012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012011012621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294224430 + ... + 294944128.

It is an arithmetic number, because the mean of its divisors is an integer number (7666642394100).

Almost surely, 2^{212012011012021} is an apocalyptic number.

It is an amenable number.

212012011012021 is a deficient number, since it is larger than the sum of its proper divisors (33320545599179).

212012011012021 is a wasteful number, since it uses less digits than its factorization.

212012011012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722565.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212012011012021 its reverse (120210110210212), we get a palindrome (332222121222233).

The spelling of 212012011012021 in words is "two hundred twelve trillion, twelve billion, eleven million, twelve thousand, twenty-one".