221440129243 has 2 divisors, whose sum is σ = 221440129244. Its totient is φ = 221440129242.

The previous prime is 221440129237. The next prime is 221440129247. The reversal of 221440129243 is 342921044122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221440129243 - 2⁹ = 221440128731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221440129199 and 221440129208.

It is not a weakly prime, because it can be changed into another prime (221440129247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110720064621 + 110720064622.

It is an arithmetic number, because the mean of its divisors is an integer number (110720064622).

Almost surely, 2^221440129243 is an apocalyptic number.

221440129243 is a deficient number, since it is larger than the sum of its proper divisors (1).

221440129243 is an equidigital number, since it uses as much as digits as its factorization.

221440129243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 221440129243 in words is "two hundred twenty-one billion, four hundred forty million, one hundred twenty-nine thousand, two hundred forty-three".