22085272381 has 2 divisors, whose sum is σ = 22085272382. Its totient is φ = 22085272380.

The previous prime is 22085272369. The next prime is 22085272387. The reversal of 22085272381 is 18327258022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21818244100 + 267028281 = 147710^2 + 16341^2 .

It is a cyclic number.

It is not a de Polignac number, because 22085272381 - 2³¹ = 19937788733 is a prime.

It is a super-2 number, since 2×22085272381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22085272387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11042636190 + 11042636191.

It is an arithmetic number, because the mean of its divisors is an integer number (11042636191).

Almost surely, 2^22085272381 is an apocalyptic number.

It is an amenable number.

22085272381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22085272381 is an equidigital number, since it uses as much as digits as its factorization.

22085272381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 22085272381 in words is "twenty-two billion, eighty-five million, two hundred seventy-two thousand, three hundred eighty-one".