201022020000021 has 32 divisors (see below), whose sum is σ = 293416981632000. Its totient is φ = 121406704473600.

The previous prime is 201022020000017. The next prime is 201022020000023. The reversal of 201022020000021 is 120000020220102.

It is not a de Polignac number, because 201022020000021 - 2² = 201022020000017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201022019999961 and 201022020000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022020000023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2012776 + ... + 20151806.

It is an arithmetic number, because the mean of its divisors is an integer number (9169280676000).

Almost surely, 2^{201022020000021} is an apocalyptic number.

It is an amenable number.

201022020000021 is a deficient number, since it is larger than the sum of its proper divisors (92394961631979).

201022020000021 is a wasteful number, since it uses less digits than its factorization.

201022020000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140217.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201022020000021 its reverse (120000020220102), we get a palindrome (321022040220123).

The spelling of 201022020000021 in words is "two hundred one trillion, twenty-two billion, twenty million, twenty-one", and thus it is an aban number.