121210021112 has 8 divisors (see below), whose sum is σ = 227268789600. Its totient is φ = 60605010552.

The previous prime is 121210021109. The next prime is 121210021123. The reversal of 121210021112 is 211120012121.

It is a tau number, because it is divible by the number of its divisors (8).

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, 7575626312 + ... + 7575626327.

It is an arithmetic number, because the mean of its divisors is an integer number (28408598700).

Almost surely, 2^121210021112 is an apocalyptic number.

It is an amenable number.

121210021112 is a deficient number, since it is larger than the sum of its proper divisors (106058768488).

121210021112 is a wasteful number, since it uses less digits than its factorization.

121210021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15151252645 (or 15151252641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121210021112 its reverse (211120012121), we get a palindrome (332330033233).

The spelling of 121210021112 in words is "one hundred twenty-one billion, two hundred ten million, twenty-one thousand, one hundred twelve".