121122012112 has 10 divisors (see below), whose sum is σ = 234673898498. Its totient is φ = 60561006048.

The previous prime is 121122012101. The next prime is 121122012157. The reversal of 121122012112 is 211210221121.

It can be written as a sum of positive squares in only one way, i.e., 115018652736 + 6103359376 = 339144^2 + 78124^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 7570125757 = 121122012112 / (1 + 2 + 1 + 1 + 2 + 2 + 0 + 1 + 2 + 1 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3785062863 + ... + 3785062894.

Almost surely, 2^121122012112 is an apocalyptic number.

It is an amenable number.

121122012112 is a deficient number, since it is larger than the sum of its proper divisors (113551886386).

121122012112 is an equidigital number, since it uses as much as digits as its factorization.

121122012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570125765 (or 7570125759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121122012112 its reverse (211210221121), we get a palindrome (332332233233).

The spelling of 121122012112 in words is "one hundred twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred twelve".