121221222021112 has 16 divisors (see below), whose sum is σ = 227290101738840. Its totient is φ = 60610528224096.

The previous prime is 121221222021061. The next prime is 121221222021167. The reversal of 121221222021112 is 211120222122121.

It is a congruent 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, 3887943 + ... + 16048630.

Almost surely, 2^{121221222021112} is an apocalyptic number.

It is an amenable number.

121221222021112 is a deficient number, since it is larger than the sum of its proper divisors (106068879717728).

121221222021112 is a wasteful number, since it uses less digits than its factorization.

121221222021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20696622 (or 20696618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121221222021112 its reverse (211120222122121), we get a palindrome (332341444143233).

The spelling of 121221222021112 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, one hundred twelve".