121142210 has 24 divisors (see below), whose sum is σ = 253657980. Its totient is φ = 41534304.

The previous prime is 121142209. The next prime is 121142227. The reversal of 121142210 is 12241121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108347281 + 12794929 = 10409^2 + 3577^2 .

It is a super-3 number, since 3×121142210³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123125 + ... + 124104.

Almost surely, 2^121142210 is an apocalyptic number.

121142210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121142210 is an abundant number, since it is smaller than the sum of its proper divisors (132515770).

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

121142210 is a wasteful number, since it uses less digits than its factorization.

121142210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247250 (or 247243 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 121142210 is about 11006.4621927302. The cubic root of 121142210 is about 494.8024379104.

Adding to 121142210 its reverse (12241121), we get a palindrome (133383331).

The spelling of 121142210 in words is "one hundred twenty-one million, one hundred forty-two thousand, two hundred ten".