221030013112309 has 4 divisors (see below), whose sum is σ = 223218429083820. Its totient is φ = 218841597140800.

The previous prime is 221030013112301. The next prime is 221030013112319. The reversal of 221030013112309 is 903211310030122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176851432102500 + 44178581009809 = 13298550^2 + 6646697^2 .

It is a cyclic number.

It is not a de Polignac number, because 221030013112309 - 2³ = 221030013112301 is a prime.

It is a super-2 number, since 2×221030013112309² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030013112301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094207985604 + ... + 1094207985805.

It is an arithmetic number, because the mean of its divisors is an integer number (55804607270955).

Almost surely, 2^{221030013112309} is an apocalyptic number.

It is an amenable number.

221030013112309 is a deficient number, since it is larger than the sum of its proper divisors (2188415971511).

221030013112309 is a wasteful number, since it uses less digits than its factorization.

221030013112309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188415971510.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 221030013112309 in words is "two hundred twenty-one trillion, thirty billion, thirteen million, one hundred twelve thousand, three hundred nine".