113003212121 has 8 divisors (see below), whose sum is σ = 113120946120. Its totient is φ = 112885521408.

The previous prime is 113003212043. The next prime is 113003212163. The reversal of 113003212121 is 121212300311.

It can be written as a sum of positive squares in 4 ways, for example, as 904806400 + 112098405721 = 30080^2 + 334811^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 113003212121 - 2¹⁴ = 113003195737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113003212121.

It is not an unprimeable number, because it can be changed into a prime (113003212171) 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, 8304095 + ... + 8317691.

It is an arithmetic number, because the mean of its divisors is an integer number (14140118265).

Almost surely, 2^113003212121 is an apocalyptic number.

It is an amenable number.

113003212121 is a deficient number, since it is larger than the sum of its proper divisors (117733999).

113003212121 is a wasteful number, since it uses less digits than its factorization.

113003212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21643.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 113003212121 its reverse (121212300311), we get a palindrome (234215512432).

The spelling of 113003212121 in words is "one hundred thirteen billion, three million, two hundred twelve thousand, one hundred twenty-one".