21302302222031 has 4 divisors (see below), whose sum is σ = 21302624226000. Its totient is φ = 21301980218064.

The previous prime is 21302302221979. The next prime is 21302302222043. The reversal of 21302302222031 is 13022220320312.

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

It is a cyclic number.

It is not a de Polignac number, because 21302302222031 - 2²² = 21302298027727 is a prime.

It is a super-2 number, since 2×21302302222031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302302221988 and 21302302222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302302224031) 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, 160902731 + ... + 161035068.

It is an arithmetic number, because the mean of its divisors is an integer number (5325656056500).

Almost surely, 2^{21302302222031} is an apocalyptic number.

21302302222031 is a deficient number, since it is larger than the sum of its proper divisors (322003969).

21302302222031 is an equidigital number, since it uses as much as digits as its factorization.

21302302222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322003968.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21302302222031 its reverse (13022220320312), we get a palindrome (34324522542343).

The spelling of 21302302222031 in words is "twenty-one trillion, three hundred two billion, three hundred two million, two hundred twenty-two thousand, thirty-one".