112021001020 has 24 divisors (see below), whose sum is σ = 235768050000. Its totient is φ = 44708600832.

The previous prime is 112021000961. The next prime is 112021001069. The reversal of 112021001020 is 20100120211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 112021000988 and 112021001006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6228270 + ... + 6246229.

It is an arithmetic number, because the mean of its divisors is an integer number (9823668750).

Almost surely, 2^112021001020 is an apocalyptic number.

112021001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112021001020 is an abundant number, since it is smaller than the sum of its proper divisors (123747048980).

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

112021001020 is a wasteful number, since it uses less digits than its factorization.

112021001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474957 (or 12474955 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 112021001020 its reverse (20100120211), we get a palindrome (132121121231).

The spelling of 112021001020 in words is "one hundred twelve billion, twenty-one million, one thousand, twenty".