121030100031 has 16 divisors (see below), whose sum is σ = 161595070208. Its totient is φ = 80575992000.

The previous prime is 121030100011. The next prime is 121030100047. The reversal of 121030100031 is 130001030121.

It is a de Polignac number, because none of the positive numbers 2^k-121030100031 is a prime.

It is a super-2 number, since 2×121030100031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030100011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12182136 + ... + 12192066.

It is an arithmetic number, because the mean of its divisors is an integer number (10099691888).

Almost surely, 2^121030100031 is an apocalyptic number.

121030100031 is a deficient number, since it is larger than the sum of its proper divisors (40564970177).

121030100031 is an equidigital number, since it uses as much as digits as its factorization.

121030100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15102.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 121030100031 its reverse (130001030121), we get a palindrome (251031130152).

The spelling of 121030100031 in words is "one hundred twenty-one billion, thirty million, one hundred thousand, thirty-one".