121110432420 has 48 divisors (see below), whose sum is σ = 339127100928. Its totient is φ = 32294411520.

The previous prime is 121110432409. The next prime is 121110432437. The reversal of 121110432420 is 24234011121.

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, 1439352 + ... + 1521168.

It is an arithmetic number, because the mean of its divisors is an integer number (7065147936).

Almost surely, 2^121110432420 is an apocalyptic number.

121110432420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110432420 is an abundant number, since it is smaller than the sum of its proper divisors (218016668508).

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

121110432420 is a wasteful number, since it uses less digits than its factorization.

121110432420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106500 (or 106498 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 121110432420 its reverse (24234011121), we get a palindrome (145344443541).

The spelling of 121110432420 in words is "one hundred twenty-one billion, one hundred ten million, four hundred thirty-two thousand, four hundred twenty".