22201021202101 has 12 divisors (see below), whose sum is σ = 27344835239148. Its totient is φ = 17910067523712.

The previous prime is 22201021202099. The next prime is 22201021202119. The reversal of 22201021202101 is 10120212010222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7083310779601 + 15117710422500 = 2661449^2 + 3888150^2 .

It is not a de Polignac number, because 22201021202101 - 2¹ = 22201021202099 is a prime.

It is a super-2 number, since 2×22201021202101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201021202161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13325942266 + ... + 13325943931.

It is an arithmetic number, because the mean of its divisors is an integer number (2278736269929).

Almost surely, 2^{22201021202101} is an apocalyptic number.

It is an amenable number.

22201021202101 is a deficient number, since it is larger than the sum of its proper divisors (5143814037047).

22201021202101 is a wasteful number, since it uses less digits than its factorization.

22201021202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26651886228 (or 26651886221 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22201021202101 its reverse (10120212010222), we get a palindrome (32321233212323).

The spelling of 22201021202101 in words is "twenty-two trillion, two hundred one billion, twenty-one million, two hundred two thousand, one hundred one".