2221230232331 has 4 divisors (see below), whose sum is σ = 2423160253464. Its totient is φ = 2019300211200.

The previous prime is 2221230232307. The next prime is 2221230232337. The reversal of 2221230232331 is 1332320321222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221230232331 is a prime.

It is a super-2 number, since 2×2221230232331² (a number of 25 digits) contains 22 as substring.

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 2221230232331.

It is not an unprimeable number, because it can be changed into a prime (2221230232337) 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, 100965010550 + ... + 100965010571.

It is an arithmetic number, because the mean of its divisors is an integer number (605790063366).

Almost surely, 2^{2221230232331} is an apocalyptic number.

2221230232331 is a deficient number, since it is larger than the sum of its proper divisors (201930021133).

2221230232331 is a wasteful number, since it uses less digits than its factorization.

2221230232331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201930021132.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 2221230232331 its reverse (1332320321222), we get a palindrome (3553550553553).

The spelling of 2221230232331 in words is "two trillion, two hundred twenty-one billion, two hundred thirty million, two hundred thirty-two thousand, three hundred thirty-one".