222100121111202 has 20 divisors (see below), whose sum is σ = 497668789897686. Its totient is φ = 74033373703680.

The previous prime is 222100121111201. The next prime is 222100121111279. The reversal of 222100121111202 is 202111121001222.

222100121111202 is a `hidden beast` number, since 22 + 210 + 0 + 121 + 111 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 204914959152201 + 17185161959001 = 14314851^2 + 4145499^2 .

It is a super-2 number, since 2×222100121111202² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (222100121111201) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 685494200799 + ... + 685494201122.

Almost surely, 2^{222100121111202} is an apocalyptic number.

222100121111202 is an abundant number, since it is smaller than the sum of its proper divisors (275568668786484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222100121111202 is a wasteful number, since it uses less digits than its factorization.

222100121111202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370988401935 (or 1370988401926 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222100121111202 its reverse (202111121001222), we get a palindrome (424211242112424).

The spelling of 222100121111202 in words is "two hundred twenty-two trillion, one hundred billion, one hundred twenty-one million, one hundred eleven thousand, two hundred two".