201222201021 has 16 divisors (see below), whose sum is σ = 282426648000. Its totient is φ = 127083420288.

The previous prime is 201222200941. The next prime is 201222201031. The reversal of 201222201021 is 120102222102.

It is not a de Polignac number, because 201222201021 - 2³⁰ = 200148459197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222201031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3157545 + ... + 3220641.

It is an arithmetic number, because the mean of its divisors is an integer number (17651665500).

Almost surely, 2^201222201021 is an apocalyptic number.

It is an amenable number.

201222201021 is a deficient number, since it is larger than the sum of its proper divisors (81204446979).

201222201021 is a wasteful number, since it uses less digits than its factorization.

201222201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119068.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201222201021 its reverse (120102222102), we get a palindrome (321324423123).

The spelling of 201222201021 in words is "two hundred one billion, two hundred twenty-two million, two hundred one thousand, twenty-one".