121400110 has 16 divisors (see below), whose sum is σ = 235329696. Its totient is φ = 44824608.

The previous prime is 121400099. The next prime is 121400129. The reversal of 121400110 is 11004121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466794 + ... + 467053.

It is an arithmetic number, because the mean of its divisors is an integer number (14708106).

Almost surely, 2^121400110 is an apocalyptic number.

121400110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121400110 is a deficient number, since it is larger than the sum of its proper divisors (113929586).

121400110 is a wasteful number, since it uses less digits than its factorization.

121400110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933867.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 121400110 is about 11018.1718084263. The cubic root of 121400110 is about 495.1533178104.

Adding to 121400110 its reverse (11004121), we get a palindrome (132404231).

The spelling of 121400110 in words is "one hundred twenty-one million, four hundred thousand, one hundred ten".