20113102212021 has 48 divisors (see below), whose sum is σ = 35757889300224. Its totient is φ = 10608734080512.

The previous prime is 20113102212019. The next prime is 20113102212029. The reversal of 20113102212021 is 12021220131102.

It is not a de Polignac number, because 20113102212021 - 2¹ = 20113102212019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20113102211985 and 20113102212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113102212029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23575120 + ... + 24413366.

It is an arithmetic number, because the mean of its divisors is an integer number (744956027088).

Almost surely, 2^{20113102212021} is an apocalyptic number.

20113102212021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20113102212021 is a deficient number, since it is larger than the sum of its proper divisors (15644787088203).

20113102212021 is a wasteful number, since it uses less digits than its factorization.

20113102212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867570 (or 867567 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20113102212021 its reverse (12021220131102), we get a palindrome (32134322343123).

The spelling of 20113102212021 in words is "twenty trillion, one hundred thirteen billion, one hundred two million, two hundred twelve thousand, twenty-one".