121440340210 has 64 divisors (see below), whose sum is σ = 255015475200. Its totient is φ = 41620850880.

The previous prime is 121440340183. The next prime is 121440340253. The reversal of 121440340210 is 12043044121.

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, 12277887 + ... + 12287773.

It is an arithmetic number, because the mean of its divisors is an integer number (3984616800).

Almost surely, 2^121440340210 is an apocalyptic number.

121440340210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121440340210 is an abundant number, since it is smaller than the sum of its proper divisors (133575134990).

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

121440340210 is an equidigital number, since it uses as much as digits as its factorization.

121440340210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13496 (or 13482 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121440340210 its reverse (12043044121), we get a palindrome (133483384331).

The spelling of 121440340210 in words is "one hundred twenty-one billion, four hundred forty million, three hundred forty thousand, two hundred ten".