121312240403302 has 16 divisors (see below), whose sum is σ = 198650391559200. Its totient is φ = 55223274871872.

The previous prime is 121312240403287. The next prime is 121312240403303. The reversal of 121312240403302 is 203304042213121.

It is a super-2 number, since 2×121312240403302² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312240403303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31957911802 + ... + 31957915597.

It is an arithmetic number, because the mean of its divisors is an integer number (12415649472450).

Almost surely, 2^{121312240403302} is an apocalyptic number.

121312240403302 is a deficient number, since it is larger than the sum of its proper divisors (77338151155898).

121312240403302 is a wasteful number, since it uses less digits than its factorization.

121312240403302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63915827487.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 121312240403302 its reverse (203304042213121), we get a palindrome (324616282616423).

The spelling of 121312240403302 in words is "one hundred twenty-one trillion, three hundred twelve billion, two hundred forty million, four hundred three thousand, three hundred two".