201200102220021 has 16 divisors (see below), whose sum is σ = 271436008564800. Its totient is φ = 132554928670848.

The previous prime is 201200102219873. The next prime is 201200102220113. The reversal of 201200102220021 is 120022201002102.

It is not a de Polignac number, because 201200102220021 - 2¹⁷ = 201200102088949 is a prime.

It is a super-2 number, since 2×201200102220021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200102220721) 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, 766117606 + ... + 766380183.

It is an arithmetic number, because the mean of its divisors is an integer number (16964750535300).

Almost surely, 2^{201200102220021} is an apocalyptic number.

It is an amenable number.

201200102220021 is a deficient number, since it is larger than the sum of its proper divisors (70235906344779).

201200102220021 is a wasteful number, since it uses less digits than its factorization.

201200102220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532498308.

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

Adding to 201200102220021 its reverse (120022201002102), we get a palindrome (321222303222123).

The spelling of 201200102220021 in words is "two hundred one trillion, two hundred billion, one hundred two million, two hundred twenty thousand, twenty-one".