223001661620251 has 2 divisors, whose sum is σ = 223001661620252. Its totient is φ = 223001661620250.

The previous prime is 223001661620159. The next prime is 223001661620273. The reversal of 223001661620251 is 152026166100322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223001661620251 - 2⁹ = 223001661619739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223001661620251.

It is not a weakly prime, because it can be changed into another prime (223001661621251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111500830810125 + 111500830810126.

It is an arithmetic number, because the mean of its divisors is an integer number (111500830810126).

Almost surely, 2^{223001661620251} is an apocalyptic number.

223001661620251 is a deficient number, since it is larger than the sum of its proper divisors (1).

223001661620251 is an equidigital number, since it uses as much as digits as its factorization.

223001661620251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 223001661620251 in words is "two hundred twenty-three trillion, one billion, six hundred sixty-one million, six hundred twenty thousand, two hundred fifty-one".