121321103303100 has 144 divisors (see below), whose sum is σ = 351257868057600. Its totient is φ = 32330598693120.

The previous prime is 121321103303069. The next prime is 121321103303167. The reversal of 121321103303100 is 1303301123121.

It is a happy number.

It is a super-2 number, since 2×121321103303100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3104489361 + ... + 3104528439.

It is an arithmetic number, because the mean of its divisors is an integer number (2439290750400).

Almost surely, 2^{121321103303100} is an apocalyptic number.

121321103303100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121321103303100 is an abundant number, since it is smaller than the sum of its proper divisors (229936764754500).

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

121321103303100 is a wasteful number, since it uses less digits than its factorization.

121321103303100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45772 (or 45765 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 121321103303100 its reverse (1303301123121), we get a palindrome (122624404426221).

The spelling of 121321103303100 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, one hundred three million, three hundred three thousand, one hundred".