222202121122001 has 16 divisors (see below), whose sum is σ = 223420333490640. Its totient is φ = 220984611225600.

The previous prime is 222202121121973. The next prime is 222202121122039. The reversal of 222202121122001 is 100221121202222.

It can be written as a sum of positive squares in 8 ways, for example, as 2527511734225 + 219674609387776 = 1589815^2 + 14821424^2 .

It is a cyclic number.

It is not a de Polignac number, because 222202121122001 - 2¹⁸ = 222202120859857 is a prime.

It is a super-2 number, since 2×222202121122001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222202121122061) 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, 13631187551 + ... + 13631203851.

It is an arithmetic number, because the mean of its divisors is an integer number (13963770843165).

Almost surely, 2^{222202121122001} is an apocalyptic number.

It is an amenable number.

222202121122001 is a deficient number, since it is larger than the sum of its proper divisors (1218212368639).

222202121122001 is a wasteful number, since it uses less digits than its factorization.

222202121122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33316.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222202121122001 its reverse (100221121202222), we get a palindrome (322423242324223).

The spelling of 222202121122001 in words is "two hundred twenty-two trillion, two hundred two billion, one hundred twenty-one million, one hundred twenty-two thousand, one".