20112201000031 has 8 divisors (see below), whose sum is σ = 23131776219680. Its totient is φ = 17129226692448.

The previous prime is 20112200999999. The next prime is 20112201000049. The reversal of 20112201000031 is 13000010221102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112201000031 - 2⁵ = 20112200999999 is a prime.

It is a super-2 number, since 2×20112201000031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112200999975 and 20112201000020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112001000031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9150226836 + ... + 9150229033.

It is an arithmetic number, because the mean of its divisors is an integer number (2891472027460).

Almost surely, 2^{20112201000031} is an apocalyptic number.

20112201000031 is a deficient number, since it is larger than the sum of its proper divisors (3019575219649).

20112201000031 is a wasteful number, since it uses less digits than its factorization.

20112201000031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18300456033.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20112201000031 its reverse (13000010221102), we get a palindrome (33112211221133).

The spelling of 20112201000031 in words is "twenty trillion, one hundred twelve billion, two hundred one million, thirty-one", and thus it is an aban number.