21223233232291 has 2 divisors, whose sum is σ = 21223233232292. Its totient is φ = 21223233232290.

The previous prime is 21223233232147. The next prime is 21223233232361. The reversal of 21223233232291 is 19223233232212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21223233232291 - 2¹⁷ = 21223233101219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21223233232291.

It is not a weakly prime, because it can be changed into another prime (21223233230291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611616616145 + 10611616616146.

It is an arithmetic number, because the mean of its divisors is an integer number (10611616616146).

Almost surely, 2^{21223233232291} is an apocalyptic number.

21223233232291 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223233232291 is an equidigital number, since it uses as much as digits as its factorization.

21223233232291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The spelling of 21223233232291 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-three million, two hundred thirty-two thousand, two hundred ninety-one".