101121212020020 has 24 divisors (see below), whose sum is σ = 283139393656224. Its totient is φ = 26965656538656.

The previous prime is 101121212019979. The next prime is 101121212020043. The reversal of 101121212020020 is 20020212121101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842676766774 + ... + 842676766893.

It is an arithmetic number, because the mean of its divisors is an integer number (11797474735676).

Almost surely, 2^{101121212020020} is an apocalyptic number.

101121212020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101121212020020 is an abundant number, since it is smaller than the sum of its proper divisors (182018181636204).

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

101121212020020 is a wasteful number, since it uses less digits than its factorization.

101121212020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685353533679 (or 1685353533677 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101121212020020 its reverse (20020212121101), we get a palindrome (121141424141121).

The spelling of 101121212020020 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twelve million, twenty thousand, twenty".