121323613740 has 96 divisors (see below), whose sum is σ = 389276912640. Its totient is φ = 27656729856.

The previous prime is 121323613717. The next prime is 121323613777. The reversal of 121323613740 is 47316323121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230560 + ... + 543879.

It is an arithmetic number, because the mean of its divisors is an integer number (4054967840).

Almost surely, 2^121323613740 is an apocalyptic number.

121323613740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121323613740 is an abundant number, since it is smaller than the sum of its proper divisors (267953298900).

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

121323613740 is a wasteful number, since it uses less digits than its factorization.

121323613740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774831 (or 774829 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

Adding to 121323613740 its reverse (47316323121), we get a palindrome (168639936861).

The spelling of 121323613740 in words is "one hundred twenty-one billion, three hundred twenty-three million, six hundred thirteen thousand, seven hundred forty".