212333021121 has 24 divisors (see below), whose sum is σ = 324596820960. Its totient is φ = 122980206336.

The previous prime is 212333021111. The next prime is 212333021149. The reversal of 212333021121 is 121120333212.

It is not a de Polignac number, because 212333021121 - 2⁶ = 212333021057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212333021111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12309111 + ... + 12326348.

It is an arithmetic number, because the mean of its divisors is an integer number (13524867540).

Almost surely, 2^212333021121 is an apocalyptic number.

It is an amenable number.

212333021121 is a deficient number, since it is larger than the sum of its proper divisors (112263799839).

212333021121 is a wasteful number, since it uses less digits than its factorization.

212333021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24635505 (or 24635492 counting only the distinct ones).

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

Adding to 212333021121 its reverse (121120333212), we get a palindrome (333453354333).

The spelling of 212333021121 in words is "two hundred twelve billion, three hundred thirty-three million, twenty-one thousand, one hundred twenty-one".