121340425220 has 48 divisors (see below), whose sum is σ = 291237303168. Its totient is φ = 41599534080.

The previous prime is 121340425189. The next prime is 121340425231. The reversal of 121340425220 is 22524043121.

It is a self number, because there is not a number n which added to its sum of digits gives 121340425220.

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, 3275924 + ... + 3312756.

It is an arithmetic number, because the mean of its divisors is an integer number (6067443816).

Almost surely, 2^121340425220 is an apocalyptic number.

121340425220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121340425220 is an abundant number, since it is smaller than the sum of its proper divisors (169896877948).

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

121340425220 is a wasteful number, since it uses less digits than its factorization.

121340425220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60380 (or 60378 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 121340425220 its reverse (22524043121), we get a palindrome (143864468341).

The spelling of 121340425220 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty-five thousand, two hundred twenty".