221124037429 has 2 divisors, whose sum is σ = 221124037430. Its totient is φ = 221124037428.

The previous prime is 221124037369. The next prime is 221124037447. The reversal of 221124037429 is 924730421122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220616211204 + 507826225 = 469698^2 + 22535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221124037429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221124037489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110562018714 + 110562018715.

It is an arithmetic number, because the mean of its divisors is an integer number (110562018715).

Almost surely, 2^221124037429 is an apocalyptic number.

It is an amenable number.

221124037429 is a deficient number, since it is larger than the sum of its proper divisors (1).

221124037429 is an equidigital number, since it uses as much as digits as its factorization.

221124037429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 221124037429 in words is "two hundred twenty-one billion, one hundred twenty-four million, thirty-seven thousand, four hundred twenty-nine".