221021121101159 has 2 divisors, whose sum is σ = 221021121101160. Its totient is φ = 221021121101158.

The previous prime is 221021121101129. The next prime is 221021121101251. The reversal of 221021121101159 is 951101121120122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221021121101159 - 2³² = 221016826133863 is a prime.

It is a super-2 number, since 2×221021121101159² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221021121101129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510560550579 + 110510560550580.

It is an arithmetic number, because the mean of its divisors is an integer number (110510560550580).

Almost surely, 2^{221021121101159} is an apocalyptic number.

221021121101159 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021121101159 is an equidigital number, since it uses as much as digits as its factorization.

221021121101159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 29.

The spelling of 221021121101159 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, one hundred one thousand, one hundred fifty-nine".