20002202213231 has 4 divisors (see below), whose sum is σ = 22859659672272. Its totient is φ = 17144744754192.

The previous prime is 20002202213221. The next prime is 20002202213251. The reversal of 20002202213231 is 13231220220002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002202213231 is a prime.

It is a super-2 number, since 2×20002202213231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002202213221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428728729510 + ... + 1428728729523.

It is an arithmetic number, because the mean of its divisors is an integer number (5714914918068).

Almost surely, 2^{20002202213231} is an apocalyptic number.

20002202213231 is a deficient number, since it is larger than the sum of its proper divisors (2857457459041).

20002202213231 is an equidigital number, since it uses as much as digits as its factorization.

20002202213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857457459040.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20002202213231 its reverse (13231220220002), we get a palindrome (33233422433233).

The spelling of 20002202213231 in words is "twenty trillion, two billion, two hundred two million, two hundred thirteen thousand, two hundred thirty-one".