20001131022 has 8 divisors (see below), whose sum is σ = 40002262056. Its totient is φ = 6667043672.

The previous prime is 20001131021. The next prime is 20001131053. The reversal of 20001131022 is 22013110002.

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

20001131022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20001130989 and 20001131007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001131021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666760913 + ... + 1666760924.

It is an arithmetic number, because the mean of its divisors is an integer number (5000282757).

Almost surely, 2^20001131022 is an apocalyptic number.

20001131022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001131022 is a wasteful number, since it uses less digits than its factorization.

20001131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333521842.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20001131022 its reverse (22013110002), we get a palindrome (42014241024).

The spelling of 20001131022 in words is "twenty billion, one million, one hundred thirty-one thousand, twenty-two".