121131131002 has 12 divisors (see below), whose sum is σ = 211361463450. Its totient is φ = 51913341816.

The previous prime is 121131130969. The next prime is 121131131027. The reversal of 121131131002 is 200131131121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 104601143241 + 16529987761 = 323421^2 + 128569^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618015877 + ... + 618016072.

Almost surely, 2^121131131002 is an apocalyptic number.

121131131002 is a deficient number, since it is larger than the sum of its proper divisors (90230332448).

121131131002 is a wasteful number, since it uses less digits than its factorization.

121131131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236031965 (or 1236031958 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121131131002 its reverse (200131131121), we get a palindrome (321262262123).

The spelling of 121131131002 in words is "one hundred twenty-one billion, one hundred thirty-one million, one hundred thirty-one thousand, two".