10202012200021 has 16 divisors (see below), whose sum is σ = 10655784057600. Its totient is φ = 9749095172608.

The previous prime is 10202012199989. The next prime is 10202012200117. The reversal of 10202012200021 is 12000221020201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10202012200021 - 2⁵ = 10202012199989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202012199974 and 10202012200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202012200421) 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, 108810600 + ... + 108904318.

It is an arithmetic number, because the mean of its divisors is an integer number (665986503600).

Almost surely, 2^{10202012200021} is an apocalyptic number.

It is an amenable number.

10202012200021 is a deficient number, since it is larger than the sum of its proper divisors (453771857579).

10202012200021 is a wasteful number, since it uses less digits than its factorization.

10202012200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98228.

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

Adding to 10202012200021 its reverse (12000221020201), we get a palindrome (22202233220222).

The spelling of 10202012200021 in words is "ten trillion, two hundred two billion, twelve million, two hundred thousand, twenty-one".