121001312031 has 8 divisors (see below), whose sum is σ = 161412321840. Its totient is φ = 80628921792.

The previous prime is 121001312027. The next prime is 121001312119. The reversal of 121001312031 is 130213100121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121001312031 - 2² = 121001312027 is a prime.

It is a super-2 number, since 2×121001312031² (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 121001312031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001312021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9647580 + ... + 9660113.

It is an arithmetic number, because the mean of its divisors is an integer number (20176540230).

Almost surely, 2^121001312031 is an apocalyptic number.

121001312031 is a deficient number, since it is larger than the sum of its proper divisors (40411009809).

121001312031 is a wasteful number, since it uses less digits than its factorization.

121001312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19309785.

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

Adding to 121001312031 its reverse (130213100121), we get a palindrome (251214412152).

The spelling of 121001312031 in words is "one hundred twenty-one billion, one million, three hundred twelve thousand, thirty-one".