22100030231021 has 2 divisors, whose sum is σ = 22100030231022. Its totient is φ = 22100030231020.

The previous prime is 22100030230991. The next prime is 22100030231057. The reversal of 22100030231021 is 12013203000122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16216640406121 + 5883389824900 = 4026989^2 + 2425570^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100030231021 - 2²⁶ = 22099963122157 is a prime.

It is a super-2 number, since 2×22100030231021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100030201021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050015115510 + 11050015115511.

It is an arithmetic number, because the mean of its divisors is an integer number (11050015115511).

Almost surely, 2^{22100030231021} is an apocalyptic number.

It is an amenable number.

22100030231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100030231021 is an equidigital number, since it uses as much as digits as its factorization.

22100030231021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22100030231021 its reverse (12013203000122), we get a palindrome (34113233231143).

The spelling of 22100030231021 in words is "twenty-two trillion, one hundred billion, thirty million, two hundred thirty-one thousand, twenty-one".