101121012120 has 32 divisors (see below), whose sum is σ = 303363036720. Its totient is φ = 26965603200.

The previous prime is 101121012107. The next prime is 101121012149. The reversal of 101121012120 is 21210121101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101121012096 and 101121012105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421337431 + ... + 421337670.

Almost surely, 2^101121012120 is an apocalyptic number.

101121012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101121012120 is an abundant number, since it is smaller than the sum of its proper divisors (202242024600).

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

101121012120 is a wasteful number, since it uses less digits than its factorization.

101121012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842675115 (or 842675111 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101121012120 its reverse (21210121101), we get a palindrome (122331133221).

The spelling of 101121012120 in words is "one hundred one billion, one hundred twenty-one million, twelve thousand, one hundred twenty".