121312310102220 has 48 divisors (see below), whose sum is σ = 339695965244160. Its totient is φ = 32347902031296.

The previous prime is 121312310102213. The next prime is 121312310102257. The reversal of 121312310102220 is 22201013213121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63022960 + ... + 64919319.

It is an arithmetic number, because the mean of its divisors is an integer number (7076999275920).

Almost surely, 2^{121312310102220} is an apocalyptic number.

121312310102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121312310102220 is an abundant number, since it is smaller than the sum of its proper divisors (218383655141940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121312310102220 is a wasteful number, since it uses less digits than its factorization.

121312310102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127958094 (or 127958092 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121312310102220 its reverse (22201013213121), we get a palindrome (143513323315341).

The spelling of 121312310102220 in words is "one hundred twenty-one trillion, three hundred twelve billion, three hundred ten million, one hundred two thousand, two hundred twenty".