121201120 has 24 divisors (see below), whose sum is σ = 286338024. Its totient is φ = 48480384.

The previous prime is 121201117. The next prime is 121201127. The reversal of 121201120 is 21102121.

It is a super-2 number, since 2×121201120² = 29379422978508800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121201097 and 121201106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378594 + ... + 378913.

It is an arithmetic number, because the mean of its divisors is an integer number (11930751).

Almost surely, 2^121201120 is an apocalyptic number.

121201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201120 is an abundant number, since it is smaller than the sum of its proper divisors (165136904).

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

121201120 is an equidigital number, since it uses as much as digits as its factorization.

121201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757522 (or 757514 counting only the distinct ones).

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

The square root of 121201120 is about 11009.1380225702. The cubic root of 121201120 is about 494.8826304048.

Adding to 121201120 its reverse (21102121), we get a palindrome (142303241).

The spelling of 121201120 in words is "one hundred twenty-one million, two hundred one thousand, one hundred twenty".