121012110 has 32 divisors (see below), whose sum is σ = 322699680. Its totient is φ = 32269824.

The previous prime is 121012109. The next prime is 121012123. The reversal of 121012110 is 11210121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121012092 and 121012101.

It is a congruent number.

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, 223827 + ... + 224366.

It is an arithmetic number, because the mean of its divisors is an integer number (10084365).

Almost surely, 2^121012110 is an apocalyptic number.

121012110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121012110 is an abundant number, since it is smaller than the sum of its proper divisors (201687570).

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

121012110 is a wasteful number, since it uses less digits than its factorization.

121012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448209 (or 448203 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 121012110 is about 11000.5504407734. The cubic root of 121012110 is about 494.6252443582.

Adding to 121012110 its reverse (11210121), we get a palindrome (132222231).

The spelling of 121012110 in words is "one hundred twenty-one million, twelve thousand, one hundred ten".