121211130 has 16 divisors (see below), whose sum is σ = 290906784. Its totient is φ = 32322960.

The previous prime is 121211113. The next prime is 121211137. The reversal of 121211130 is 31112121.

It is a super-3 number, since 3×121211130³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121211137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2020156 + ... + 2020215.

It is an arithmetic number, because the mean of its divisors is an integer number (18181674).

Almost surely, 2^121211130 is an apocalyptic number.

121211130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211130 is an abundant number, since it is smaller than the sum of its proper divisors (169695654).

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

121211130 is a wasteful number, since it uses less digits than its factorization.

121211130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040381.

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

The square root of 121211130 is about 11009.5926355156. The cubic root of 121211130 is about 494.8962541479.

Adding to 121211130 its reverse (31112121), we get a palindrome (152323251).

Subtracting from 121211130 its reverse (31112121), we obtain a palindrome (90099009).

The spelling of 121211130 in words is "one hundred twenty-one million, two hundred eleven thousand, one hundred thirty".