221132012279 has 2 divisors, whose sum is σ = 221132012280. Its totient is φ = 221132012278.

The previous prime is 221132012273. The next prime is 221132012317. The reversal of 221132012279 is 972210231122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221132012279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221132012273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110566006139 + 110566006140.

It is an arithmetic number, because the mean of its divisors is an integer number (110566006140).

Almost surely, 2^221132012279 is an apocalyptic number.

221132012279 is a deficient number, since it is larger than the sum of its proper divisors (1).

221132012279 is an equidigital number, since it uses as much as digits as its factorization.

221132012279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 221132012279 in words is "two hundred twenty-one billion, one hundred thirty-two million, twelve thousand, two hundred seventy-nine".