221422047511429 has 2 divisors, whose sum is σ = 221422047511430. Its totient is φ = 221422047511428.

The previous prime is 221422047511411. The next prime is 221422047511459. The reversal of 221422047511429 is 924115740224122.

It is a happy number.

221422047511429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221301266935204 + 120780576225 = 14876198^2 + 347535^2 .

It is a cyclic number.

It is not a de Polignac number, because 221422047511429 - 2⁵ = 221422047511397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221422047511459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110711023755714 + 110711023755715.

It is an arithmetic number, because the mean of its divisors is an integer number (110711023755715).

Almost surely, 2^{221422047511429} is an apocalyptic number.

It is an amenable number.

221422047511429 is a deficient number, since it is larger than the sum of its proper divisors (1).

221422047511429 is an equidigital number, since it uses as much as digits as its factorization.

221422047511429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 221422047511429 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, forty-seven million, five hundred eleven thousand, four hundred twenty-nine".