201122210021000 has 32 divisors (see below), whose sum is σ = 470625971451480. Its totient is φ = 80448884008000.

The previous prime is 201122210020999. The next prime is 201122210021017. The reversal of 201122210021000 is 120012221102.

It can be written as a sum of positive squares in 4 ways, for example, as 100554326071684 + 100567883949316 = 10027678^2 + 10028354^2 .

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, 100561104011 + ... + 100561106010.

Almost surely, 2^{201122210021000} is an apocalyptic number.

201122210021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122210021000 is an abundant number, since it is smaller than the sum of its proper divisors (269503761430480).

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

201122210021000 is a wasteful number, since it uses less digits than its factorization.

201122210021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201122210042 (or 201122210028 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201122210021000 its reverse (120012221102), we get a palindrome (201242222242102).

The spelling of 201122210021000 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred ten million, twenty-one thousand".