121210100020112 has 20 divisors (see below), whose sum is σ = 248658955188876. Its totient is φ = 57040047068160.

The previous prime is 121210100020003. The next prime is 121210100020153. The reversal of 121210100020112 is 211020001012121.

It can be written as a sum of positive squares in 2 ways, for example, as 89351571139216 + 31858528880896 = 9452596^2 + 5644336^2 .

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, 222812683589 + ... + 222812684132.

Almost surely, 2^{121210100020112} is an apocalyptic number.

It is an amenable number.

121210100020112 is an abundant number, since it is smaller than the sum of its proper divisors (127448855168764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121210100020112 is a wasteful number, since it uses less digits than its factorization.

121210100020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445625367746 (or 445625367740 counting only the distinct ones).

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

Adding to 121210100020112 its reverse (211020001012121), we get a palindrome (332230101032233).

The spelling of 121210100020112 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred million, twenty thousand, one hundred twelve".