20102011011021 has 16 divisors (see below), whose sum is σ = 26910188601408. Its totient is φ = 13347589920000.

The previous prime is 20102011010953. The next prime is 20102011011029. The reversal of 20102011011021 is 12011011020102.

It is not a de Polignac number, because 20102011011021 - 2⁹ = 20102011010509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102011010988 and 20102011011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102011011029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29284485 + ... + 29963061.

It is an arithmetic number, because the mean of its divisors is an integer number (1681886787588).

Almost surely, 2^{20102011011021} is an apocalyptic number.

It is an amenable number.

20102011011021 is a deficient number, since it is larger than the sum of its proper divisors (6808177590387).

20102011011021 is a wasteful number, since it uses less digits than its factorization.

20102011011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718172.

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

Adding to 20102011011021 its reverse (12011011020102), we get a palindrome (32113022031123).

The spelling of 20102011011021 in words is "twenty trillion, one hundred two billion, eleven million, eleven thousand, twenty-one".