121013310 has 192 divisors, whose sum is σ = 353699136. Its totient is φ = 26357760.

The previous prime is 121013303. The next prime is 121013311. The reversal of 121013310 is 13310121.

It is a super-2 number, since 2×121013310² = 29288442394312200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013311) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2283244 + ... + 2283296.

It is an arithmetic number, because the mean of its divisors is an integer number (1842183).

Almost surely, 2^121013310 is an apocalyptic number.

121013310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121013310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176849568).

121013310 is an abundant number, since it is smaller than the sum of its proper divisors (232685826).

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

121013310 is a wasteful number, since it uses less digits than its factorization.

121013310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 121013310 is about 11000.6049833634. The cubic root of 121013310 is about 494.6268793139.

Adding to 121013310 its reverse (13310121), we get a palindrome (134323431).

The spelling of 121013310 in words is "one hundred twenty-one million, thirteen thousand, three hundred ten".