121251015234430 has 16 divisors (see below), whose sum is σ = 221509317384720. Its totient is φ = 47776519435392.

The previous prime is 121251015234337. The next prime is 121251015234451. The reversal of 121251015234430 is 34432510152121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90485831595 + ... + 90485832934.

It is an arithmetic number, because the mean of its divisors is an integer number (13844332336545).

Almost surely, 2^{121251015234430} is an apocalyptic number.

121251015234430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121251015234430 is a deficient number, since it is larger than the sum of its proper divisors (100258302150290).

121251015234430 is a wasteful number, since it uses less digits than its factorization.

121251015234430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180971664603.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 121251015234430 its reverse (34432510152121), we get a palindrome (155683525386551).

The spelling of 121251015234430 in words is "one hundred twenty-one trillion, two hundred fifty-one billion, fifteen million, two hundred thirty-four thousand, four hundred thirty".