112121220020 has 24 divisors (see below), whose sum is σ = 236510421504. Its totient is φ = 44647371936.

The previous prime is 112121219993. The next prime is 112121220037. The reversal of 112121220020 is 20022121211.

It is a junction number, because it is equal to n+sod(n) for n = 112121219977 and 112121220004.

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, 12565184 + ... + 12574103.

It is an arithmetic number, because the mean of its divisors is an integer number (9854600896).

Almost surely, 2^112121220020 is an apocalyptic number.

112121220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121220020 is an abundant number, since it is smaller than the sum of its proper divisors (124389201484).

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

112121220020 is a wasteful number, since it uses less digits than its factorization.

112121220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25139519 (or 25139517 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 112121220020 its reverse (20022121211), we get a palindrome (132143341231).

The spelling of 112121220020 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, twenty".