121031131202 has 16 divisors (see below), whose sum is σ = 192322472472. Its totient is φ = 56927216640.

The previous prime is 121031131201. The next prime is 121031131211. The reversal of 121031131202 is 202131130121.

It can be written as a sum of positive squares in 4 ways, for example, as 114075738001 + 6955393201 = 337751^2 + 83399^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (121031131201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825299 + ... + 960822.

Almost surely, 2^121031131202 is an apocalyptic number.

121031131202 is a deficient number, since it is larger than the sum of its proper divisors (71291341270).

121031131202 is a wasteful number, since it uses less digits than its factorization.

121031131202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788133.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121031131202 its reverse (202131130121), we get a palindrome (323162261323).

The spelling of 121031131202 in words is "one hundred twenty-one billion, thirty-one million, one hundred thirty-one thousand, two hundred two".