20112200020021 has 16 divisors (see below), whose sum is σ = 22416525964800. Its totient is φ = 17932498149888.

The previous prime is 20112200020019. The next prime is 20112200020027. The reversal of 20112200020021 is 12002000221102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20112200020021 - 2¹ = 20112200020019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112200019983 and 20112200020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112200020027) 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, 16119996 + ... + 17322778.

It is an arithmetic number, because the mean of its divisors is an integer number (1401032872800).

Almost surely, 2^{20112200020021} is an apocalyptic number.

It is an amenable number.

20112200020021 is a deficient number, since it is larger than the sum of its proper divisors (2304325944779).

20112200020021 is a wasteful number, since it uses less digits than its factorization.

20112200020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254588.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20112200020021 its reverse (12002000221102), we get a palindrome (32114200241123).

The spelling of 20112200020021 in words is "twenty trillion, one hundred twelve billion, two hundred million, twenty thousand, twenty-one".