121003012131 has 32 divisors (see below), whose sum is σ = 174513346560. Its totient is φ = 74286375936.

The previous prime is 121003012127. The next prime is 121003012147. The reversal of 121003012131 is 131210300121.

It is a happy number.

It is not a de Polignac number, because 121003012131 - 2² = 121003012127 is a prime.

It is a super-2 number, since 2×121003012131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121003012131.

It is not an unprimeable number, because it can be changed into a prime (121003014131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12979890 + ... + 12989208.

It is an arithmetic number, because the mean of its divisors is an integer number (5453542080).

Almost surely, 2^121003012131 is an apocalyptic number.

121003012131 is a deficient number, since it is larger than the sum of its proper divisors (53510334429).

121003012131 is a wasteful number, since it uses less digits than its factorization.

121003012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14803.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121003012131 its reverse (131210300121), we get a palindrome (252213312252).

The spelling of 121003012131 in words is "one hundred twenty-one billion, three million, twelve thousand, one hundred thirty-one".