20011021022 has 16 divisors (see below), whose sum is σ = 30831661152. Its totient is φ = 9733868640.

The previous prime is 20011021013. The next prime is 20011021049. The reversal of 20011021022 is 22012011002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011020994 and 20011021012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932372 + ... + 953592.

It is an arithmetic number, because the mean of its divisors is an integer number (1926978822).

Almost surely, 2^20011021022 is an apocalyptic number.

20011021022 is a deficient number, since it is larger than the sum of its proper divisors (10820640130).

20011021022 is a wasteful number, since it uses less digits than its factorization.

20011021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34003.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20011021022 its reverse (22012011002), we get a palindrome (42023032024).

The spelling of 20011021022 in words is "twenty billion, eleven million, twenty-one thousand, twenty-two".