10202112012221 has 16 divisors (see below), whose sum is σ = 11197351249920. Its totient is φ = 9253366429440.

The previous prime is 10202112012163. The next prime is 10202112012307. The reversal of 10202112012221 is 12221021120201.

It is not a de Polignac number, because 10202112012221 - 2¹⁰ = 10202112011197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10202112012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202112018221) 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, 40373726 + ... + 40625631.

It is an arithmetic number, because the mean of its divisors is an integer number (699834453120).

Almost surely, 2^{10202112012221} is an apocalyptic number.

It is an amenable number.

10202112012221 is a deficient number, since it is larger than the sum of its proper divisors (995239237699).

10202112012221 is a wasteful number, since it uses less digits than its factorization.

10202112012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80999644.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10202112012221 its reverse (12221021120201), we get a palindrome (22423133132422).

The spelling of 10202112012221 in words is "ten trillion, two hundred two billion, one hundred twelve million, twelve thousand, two hundred twenty-one".