1022204101252 has 12 divisors (see below), whose sum is σ = 1788869979036. Its totient is φ = 511098392960.

The previous prime is 1022204101249. The next prime is 1022204101253. The reversal of 1022204101252 is 2521014022201.

It can be written as a sum of positive squares in 2 ways, for example, as 13517317696 + 1008686783556 = 116264^2 + 1004334^2 .

It is not an unprimeable number, because it can be changed into a prime (1022204101253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228433 + ... + 1447960.

It is an arithmetic number, because the mean of its divisors is an integer number (149072498253).

Almost surely, 2^{1022204101252} is an apocalyptic number.

It is an amenable number.

1022204101252 is a deficient number, since it is larger than the sum of its proper divisors (766665877784).

1022204101252 is a wasteful number, since it uses less digits than its factorization.

1022204101252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828838 (or 1828836 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 1022204101252 its reverse (2521014022201), we get a palindrome (3543218123453).

The spelling of 1022204101252 in words is "one trillion, twenty-two billion, two hundred four million, one hundred one thousand, two hundred fifty-two".