121312211232212 has 96 divisors (see below), whose sum is σ = 300043452334080. Its totient is φ = 41332516341120.

The previous prime is 121312211232127. The next prime is 121312211232263. The reversal of 121312211232212 is 212232112213121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797233268 + ... + 797385419.

It is an arithmetic number, because the mean of its divisors is an integer number (3125452628480).

Almost surely, 2^{121312211232212} is an apocalyptic number.

It is an amenable number.

121312211232212 is an abundant number, since it is smaller than the sum of its proper divisors (178731241101868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121312211232212 is a wasteful number, since it uses less digits than its factorization.

121312211232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594618741 (or 1594618739 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

Adding to 121312211232212 its reverse (212232112213121), we get a palindrome (333544323445333).

The spelling of 121312211232212 in words is "one hundred twenty-one trillion, three hundred twelve billion, two hundred eleven million, two hundred thirty-two thousand, two hundred twelve".