121140210 has 16 divisors (see below), whose sum is σ = 290736576. Its totient is φ = 32304048.

The previous prime is 121140193. The next prime is 121140211. The reversal of 121140210 is 12041121.

It is a happy number.

It is a super-3 number, since 3×121140210³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121140211) 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, 2018974 + ... + 2019033.

It is an arithmetic number, because the mean of its divisors is an integer number (18171036).

Almost surely, 2^121140210 is an apocalyptic number.

121140210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121140210 is an abundant number, since it is smaller than the sum of its proper divisors (169596366).

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

121140210 is a wasteful number, since it uses less digits than its factorization.

121140210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038017.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 121140210 is about 11006.3713366395. The cubic root of 121140210 is about 494.7997149115.

Adding to 121140210 its reverse (12041121), we get a palindrome (133181331).

The spelling of 121140210 in words is "one hundred twenty-one million, one hundred forty thousand, two hundred ten".