1222100333125 has 30 divisors (see below), whose sum is σ = 1776465041406. Its totient is φ = 838011636000.

The previous prime is 1222100333123. The next prime is 1222100333143. The reversal of 1222100333125 is 5213330012221.

It can be written as a sum of positive squares in 5 ways, for example, as 647416562884 + 574683770241 = 804622^2 + 758079^2 .

It is not a de Polignac number, because 1222100333125 - 2¹ = 1222100333123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 1222100333125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100333123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 19922034 + ... + 19983283.

Almost surely, 2^{1222100333125} is an apocalyptic number.

It is an amenable number.

1222100333125 is a deficient number, since it is larger than the sum of its proper divisors (554364708281).

1222100333125 is an frugal number, since it uses more digits than its factorization.

1222100333125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39905351 (or 39905329 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 1222100333125 its reverse (5213330012221), we get a palindrome (6435430345346).

The spelling of 1222100333125 in words is "one trillion, two hundred twenty-two billion, one hundred million, three hundred thirty-three thousand, one hundred twenty-five".