121631605622040 has 64 divisors (see below), whose sum is σ = 364923619061760. Its totient is φ = 32432534637440.

The previous prime is 121631605622011. The next prime is 121631605622123. The reversal of 121631605622040 is 40226506136121.

It is a self number, because there is not a number n which added to its sum of digits gives 121631605622040.

It is a congruent number.

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, 38476194 + ... + 41517233.

It is an arithmetic number, because the mean of its divisors is an integer number (5701931547840).

Almost surely, 2^{121631605622040} is an apocalyptic number.

121631605622040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121631605622040 is an abundant number, since it is smaller than the sum of its proper divisors (243292013439720).

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

121631605622040 is a wasteful number, since it uses less digits than its factorization.

121631605622040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80006112 (or 80006108 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 121631605622040 in words is "one hundred twenty-one trillion, six hundred thirty-one billion, six hundred five million, six hundred twenty-two thousand, forty".