20001011022 has 40 divisors (see below), whose sum is σ = 45770652576. Its totient is φ = 6525150048.

The previous prime is 20001011021. The next prime is 20001011089. The reversal of 20001011022 is 22011010002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001010995 and 20001011013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001011021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1305823 + ... + 1321050.

Almost surely, 2^20001011022 is an apocalyptic number.

20001011022 is an abundant number, since it is smaller than the sum of its proper divisors (25769641554).

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

20001011022 is a wasteful number, since it uses less digits than its factorization.

20001011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626934 (or 2626925 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20001011022 its reverse (22011010002), we get a palindrome (42012021024).

The spelling of 20001011022 in words is "twenty billion, one million, eleven thousand, twenty-two".