121124311400 has 48 divisors (see below), whose sum is σ = 282174127200. Its totient is φ = 48353362880.

The previous prime is 121124311387. The next prime is 121124311531. The reversal of 121124311400 is 4113421121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501410 + ... + 702609.

It is an arithmetic number, because the mean of its divisors is an integer number (5878627650).

Almost surely, 2^121124311400 is an apocalyptic number.

121124311400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121124311400 is an abundant number, since it is smaller than the sum of its proper divisors (161049815800).

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

121124311400 is a wasteful number, since it uses less digits than its factorization.

121124311400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204538 (or 1204529 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121124311400 its reverse (4113421121), we get a palindrome (125237732521).

The spelling of 121124311400 in words is "one hundred twenty-one billion, one hundred twenty-four million, three hundred eleven thousand, four hundred".