212012010121 has 16 divisors (see below), whose sum is σ = 226279424448. Its totient is φ = 197945280000.

The previous prime is 212012010107. The next prime is 212012010163. The reversal of 212012010121 is 121010210212.

It is not a de Polignac number, because 212012010121 - 2⁹ = 212012009609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012010181) 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, 6667366 + ... + 6699088.

It is an arithmetic number, because the mean of its divisors is an integer number (14142464028).

Almost surely, 2^212012010121 is an apocalyptic number.

It is an amenable number.

212012010121 is a deficient number, since it is larger than the sum of its proper divisors (14267414327).

212012010121 is a wasteful number, since it uses less digits than its factorization.

212012010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34872.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212012010121 its reverse (121010210212), we get a palindrome (333022220333).

The spelling of 212012010121 in words is "two hundred twelve billion, twelve million, ten thousand, one hundred twenty-one".