222210220121000 has 32 divisors (see below), whose sum is σ = 519971915085480. Its totient is φ = 88884088048000.

The previous prime is 222210220120991. The next prime is 222210220121053. The reversal of 222210220121000 is 121022012222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87199252506916 + 135010967614084 = 9338054^2 + 11619422^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222210220121000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111105109061 + ... + 111105111060.

Almost surely, 2^{222210220121000} is an apocalyptic number.

222210220121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222210220121000 is an abundant number, since it is smaller than the sum of its proper divisors (297761694964480).

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

222210220121000 is a wasteful number, since it uses less digits than its factorization.

222210220121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222210220142 (or 222210220128 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222210220121000 its reverse (121022012222), we get a palindrome (222331242133222).

The spelling of 222210220121000 in words is "two hundred twenty-two trillion, two hundred ten billion, two hundred twenty million, one hundred twenty-one thousand".