102001022200021 has 16 divisors (see below), whose sum is σ = 123708431032704. Its totient is φ = 82100790480384.

The previous prime is 102001022199977. The next prime is 102001022200039. The reversal of 102001022200021 is 120002220100201.

It is a happy number.

It is not a de Polignac number, because 102001022200021 - 2¹³ = 102001022191829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102001022199974 and 102001022200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001022200061) 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, 967386840 + ... + 967492273.

It is an arithmetic number, because the mean of its divisors is an integer number (7731776939544).

Almost surely, 2^{102001022200021} is an apocalyptic number.

It is an amenable number.

102001022200021 is a deficient number, since it is larger than the sum of its proper divisors (21707408832683).

102001022200021 is a wasteful number, since it uses less digits than its factorization.

102001022200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934879580.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102001022200021 its reverse (120002220100201), we get a palindrome (222003242300222).

The spelling of 102001022200021 in words is "one hundred two trillion, one billion, twenty-two million, two hundred thousand, twenty-one".