121434020125 has 16 divisors (see below), whose sum is σ = 165326900544. Its totient is φ = 88315650000.

The previous prime is 121434020083. The next prime is 121434020171. The reversal of 121434020125 is 521020434121.

It is not a de Polignac number, because 121434020125 - 2¹⁵ = 121433987357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121434020125.

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, 44156451 + ... + 44159200.

It is an arithmetic number, because the mean of its divisors is an integer number (10332931284).

Almost surely, 2^121434020125 is an apocalyptic number.

It is an amenable number.

121434020125 is a deficient number, since it is larger than the sum of its proper divisors (43892880419).

121434020125 is an equidigital number, since it uses as much as digits as its factorization.

121434020125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88315677 (or 88315667 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 121434020125 its reverse (521020434121), we get a palindrome (642454454246).

The spelling of 121434020125 in words is "one hundred twenty-one billion, four hundred thirty-four million, twenty thousand, one hundred twenty-five".