212333012121 has 16 divisors (see below), whose sum is σ = 283639129088. Its totient is φ = 141291216000.

The previous prime is 212333012119. The next prime is 212333012131. The reversal of 212333012121 is 121210333212.

It is not a de Polignac number, because 212333012121 - 2¹ = 212333012119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212333012131) 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, 12607176 + ... + 12624006.

It is an arithmetic number, because the mean of its divisors is an integer number (17727445568).

Almost surely, 2^212333012121 is an apocalyptic number.

It is an amenable number.

212333012121 is a deficient number, since it is larger than the sum of its proper divisors (71306116967).

212333012121 is a wasteful number, since it uses less digits than its factorization.

212333012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24432.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212333012121 its reverse (121210333212), we get a palindrome (333543345333).

The spelling of 212333012121 in words is "two hundred twelve billion, three hundred thirty-three million, twelve thousand, one hundred twenty-one".