221130301309 has 4 divisors (see below), whose sum is σ = 232768738240. Its totient is φ = 209491864380.

The previous prime is 221130301307. The next prime is 221130301373. The reversal of 221130301309 is 903103031122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 903103031122 = 2 ⋅451551515561.

It is a cyclic number.

It is not a de Polignac number, because 221130301309 - 2¹ = 221130301307 is a prime.

It is a super-2 number, since 2×221130301309² (a number of 23 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 (221130301307) 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, 5819218437 + ... + 5819218474.

It is an arithmetic number, because the mean of its divisors is an integer number (58192184560).

Almost surely, 2^221130301309 is an apocalyptic number.

It is an amenable number.

221130301309 is a deficient number, since it is larger than the sum of its proper divisors (11638436931).

221130301309 is a wasteful number, since it uses less digits than its factorization.

221130301309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11638436930.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 221130301309 in words is "two hundred twenty-one billion, one hundred thirty million, three hundred one thousand, three hundred nine".