12212333121 has 16 divisors (see below), whose sum is σ = 16665891264. Its totient is φ = 7950258624.

The previous prime is 12212333113. The next prime is 12212333131. The reversal of 12212333121 is 12133321221.

It is not a de Polignac number, because 12212333121 - 2³ = 12212333113 is a prime.

It is a super-3 number, since 3×12212333121³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12212333101) 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, 666535 + ... + 684611.

It is an arithmetic number, because the mean of its divisors is an integer number (1041618204).

Almost surely, 2^12212333121 is an apocalyptic number.

It is an amenable number.

12212333121 is a deficient number, since it is larger than the sum of its proper divisors (4453558143).

12212333121 is a wasteful number, since it uses less digits than its factorization.

12212333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23360.

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

Adding to 12212333121 its reverse (12133321221), we get a palindrome (24345654342).

It can be divided in two parts, 12 and 212333121, that multiplied together give a palindrome (2547997452).

The spelling of 12212333121 in words is "twelve billion, two hundred twelve million, three hundred thirty-three thousand, one hundred twenty-one".