121011111996 has 24 divisors (see below), whose sum is σ = 282438965760. Its totient is φ = 40325650992.

The previous prime is 121011111961. The next prime is 121011111997. The reversal of 121011111996 is 699111110121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011111997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378956 + ... + 1464083.

It is an arithmetic number, because the mean of its divisors is an integer number (11768290240).

Almost surely, 2^121011111996 is an apocalyptic number.

It is an amenable number.

121011111996 is an abundant number, since it is smaller than the sum of its proper divisors (161427853764).

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

121011111996 is a wasteful number, since it uses less digits than its factorization.

121011111996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846593 (or 2846591 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 33.

The spelling of 121011111996 in words is "one hundred twenty-one billion, eleven million, one hundred eleven thousand, nine hundred ninety-six".