121302440031 has 8 divisors (see below), whose sum is σ = 170249038720. Its totient is φ = 76612067352.

The previous prime is 121302440027. The next prime is 121302440071. The reversal of 121302440031 is 130044203121.

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

It is not a de Polignac number, because 121302440031 - 2² = 121302440027 is a prime.

It is a super-2 number, since 2×121302440031² (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 (121302440071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064056435 + ... + 1064056548.

It is an arithmetic number, because the mean of its divisors is an integer number (21281129840).

Almost surely, 2^121302440031 is an apocalyptic number.

121302440031 is a deficient number, since it is larger than the sum of its proper divisors (48946598689).

121302440031 is a wasteful number, since it uses less digits than its factorization.

121302440031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128113005.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 121302440031 its reverse (130044203121), we get a palindrome (251346643152).

The spelling of 121302440031 in words is "one hundred twenty-one billion, three hundred two million, four hundred forty thousand, thirty-one".