212011020122121 has 32 divisors (see below), whose sum is σ = 342667925884800. Its totient is φ = 128482582487040.

The previous prime is 212011020122117. The next prime is 212011020122131. The reversal of 212011020122121 is 121221020110212.

212011020122121 is a `hidden beast` number, since 21 + 201 + 1 + 0 + 201 + 221 + 21 = 666.

It is not a de Polignac number, because 212011020122121 - 2² = 212011020122117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212011020122094 and 212011020122103.

It is not an unprimeable number, because it can be changed into a prime (212011020122131) 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, 20572056 + ... + 29107241.

It is an arithmetic number, because the mean of its divisors is an integer number (10708372683900).

Almost surely, 2^{212011020122121} is an apocalyptic number.

It is an amenable number.

212011020122121 is a deficient number, since it is larger than the sum of its proper divisors (130656905762679).

212011020122121 is a wasteful number, since it uses less digits than its factorization.

212011020122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49693686 (or 49693680 counting only the distinct ones).

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

Adding to 212011020122121 its reverse (121221020110212), we get a palindrome (333232040232333).

The spelling of 212011020122121 in words is "two hundred twelve trillion, eleven billion, twenty million, one hundred twenty-two thousand, one hundred twenty-one".