210121130 has 16 divisors (see below), whose sum is σ = 378712800. Its totient is φ = 83938512.

The previous prime is 210121103. The next prime is 210121151. The reversal of 210121130 is 31121012.

It is a super-3 number, since 3×210121130³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5480 + ... + 21219.

It is an arithmetic number, because the mean of its divisors is an integer number (23669550).

Almost surely, 2^210121130 is an apocalyptic number.

210121130 is a deficient number, since it is larger than the sum of its proper divisors (168591670).

210121130 is a wasteful number, since it uses less digits than its factorization.

210121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27493.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 210121130 is about 14495.5555257465. Note that the first 4 decimals coincide. The cubic root of 210121130 is about 594.5064570031.

Adding to 210121130 its reverse (31121012), we get a palindrome (241242142).

The spelling of 210121130 in words is "two hundred ten million, one hundred twenty-one thousand, one hundred thirty".