121211320112 has 20 divisors (see below), whose sum is σ = 234911723616. Its totient is φ = 60588939840.

The previous prime is 121211320103. The next prime is 121211320123. The reversal of 121211320112 is 211023112121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985103 + ... + 1101294.

Almost surely, 2^121211320112 is an apocalyptic number.

It is an amenable number.

121211320112 is a deficient number, since it is larger than the sum of its proper divisors (113700403504).

121211320112 is a wasteful number, since it uses less digits than its factorization.

121211320112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090036 (or 2090030 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121211320112 its reverse (211023112121), we get a palindrome (332234432233).

The spelling of 121211320112 in words is "one hundred twenty-one billion, two hundred eleven million, three hundred twenty thousand, one hundred twelve".