121112010 has 40 divisors (see below), whose sum is σ = 325658916. Its totient is φ = 32296320.

The previous prime is 121111999. The next prime is 121112011. The reversal of 121112010 is 10211121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114896961 + 6215049 = 10719^2 + 2493^2 .

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 = 121111983 and 121112001.

It is not an unprimeable number, because it can be changed into a prime (121112011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73951 + ... + 75570.

Almost surely, 2^121112010 is an apocalyptic number.

121112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121112010 is an abundant number, since it is smaller than the sum of its proper divisors (204546906).

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

121112010 is a wasteful number, since it uses less digits than its factorization.

121112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149540 (or 149531 counting only the distinct ones).

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

The square root of 121112010 is about 11005.0901859094. The cubic root of 121112010 is about 494.7613174358.

Adding to 121112010 its reverse (10211121), we get a palindrome (131323131).

The spelling of 121112010 in words is "one hundred twenty-one million, one hundred twelve thousand, ten".