22111222100201 has 12 divisors (see below), whose sum is σ = 23943191777820. Its totient is φ = 20410128011520.

The previous prime is 22111222100189. The next prime is 22111222100207. The reversal of 22111222100201 is 10200122211122.

It can be written as a sum of positive squares in 6 ways, for example, as 2988486668176 + 19122735432025 = 1728724^2 + 4372955^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22111222100201 is a prime.

It is a super-2 number, since 2×22111222100201² (a number of 27 digits) contains 22 as substring.

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 22111222100201.

It is not an unprimeable number, because it can be changed into a prime (22111222100207) 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, 15267845 + ... + 16653213.

It is an arithmetic number, because the mean of its divisors is an integer number (1995265981485).

Almost surely, 2^{22111222100201} is an apocalyptic number.

It is an amenable number.

22111222100201 is a deficient number, since it is larger than the sum of its proper divisors (1831969677619).

22111222100201 is a wasteful number, since it uses less digits than its factorization.

22111222100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479836 (or 1479823 counting only the distinct ones).

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

Adding to 22111222100201 its reverse (10200122211122), we get a palindrome (32311344311323).

The spelling of 22111222100201 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred thousand, two hundred one".