210121113 has 8 divisors (see below), whose sum is σ = 287733568. Its totient is φ = 136294704.

The previous prime is 210121103. The next prime is 210121151. The reversal of 210121113 is 311121012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210121113 - 2¹⁴ = 210104729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210121103) 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, 946381 + ... + 946602.

It is an arithmetic number, because the mean of its divisors is an integer number (35966696).

Almost surely, 2^210121113 is an apocalyptic number.

It is an amenable number.

210121113 is a deficient number, since it is larger than the sum of its proper divisors (77612455).

210121113 is a wasteful number, since it uses less digits than its factorization.

210121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893023.

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

The square root of 210121113 is about 14495.5549393599. The cubic root of 210121113 is about 594.5064409701.

Adding to 210121113 its reverse (311121012), we get a palindrome (521242125).

The spelling of 210121113 in words is "two hundred ten million, one hundred twenty-one thousand, one hundred thirteen".