220121432312 has 16 divisors (see below), whose sum is σ = 414888566400. Its totient is φ = 109484481280.

The previous prime is 220121432269. The next prime is 220121432329. The reversal of 220121432312 is 213234121022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72027737 + ... + 72030792.

It is an arithmetic number, because the mean of its divisors is an integer number (25930535400).

Almost surely, 2^220121432312 is an apocalyptic number.

It is an amenable number.

220121432312 is a deficient number, since it is larger than the sum of its proper divisors (194767134088).

220121432312 is a wasteful number, since it uses less digits than its factorization.

220121432312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144058726 (or 144058722 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 220121432312 its reverse (213234121022), we get a palindrome (433355553334).

The spelling of 220121432312 in words is "two hundred twenty billion, one hundred twenty-one million, four hundred thirty-two thousand, three hundred twelve".