121020240110 has 128 divisors (see below), whose sum is σ = 284119861248. Its totient is φ = 35988480000.

The previous prime is 121020240073. The next prime is 121020240113. The reversal of 121020240110 is 11042020121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020240113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7093190 + ... + 7110230.

It is an arithmetic number, because the mean of its divisors is an integer number (2219686416).

Almost surely, 2^121020240110 is an apocalyptic number.

121020240110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020240110 is an abundant number, since it is smaller than the sum of its proper divisors (163099621138).

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

121020240110 is a wasteful number, since it uses less digits than its factorization.

121020240110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17490.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121020240110 its reverse (11042020121), we get a palindrome (132062260231).

The spelling of 121020240110 in words is "one hundred twenty-one billion, twenty million, two hundred forty thousand, one hundred ten".