20112201102021 has 32 divisors (see below), whose sum is σ = 30690332141568. Its totient is φ = 11476507049280.

The previous prime is 20112201101987. The next prime is 20112201102053. The reversal of 20112201102021 is 12020110221102.

It is not a de Polignac number, because 20112201102021 - 2²² = 20112196907717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112201102121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54502866 + ... + 54870636.

It is an arithmetic number, because the mean of its divisors is an integer number (959072879424).

Almost surely, 2^{20112201102021} is an apocalyptic number.

20112201102021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20112201102021 is a deficient number, since it is larger than the sum of its proper divisors (10578131039547).

20112201102021 is a wasteful number, since it uses less digits than its factorization.

20112201102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371441.

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

Adding to 20112201102021 its reverse (12020110221102), we get a palindrome (32132311323123).

The spelling of 20112201102021 in words is "twenty trillion, one hundred twelve billion, two hundred one million, one hundred two thousand, twenty-one".