221422047311429 has 4 divisors (see below), whose sum is σ = 234446873623884. Its totient is φ = 208397220998976.

The previous prime is 221422047311351. The next prime is 221422047311461. The reversal of 221422047311429 is 924113740224122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201804810463204 + 19617236848225 = 14205802^2 + 4429135^2 .

It is a cyclic number.

It is not a de Polignac number, because 221422047311429 - 2²⁰ = 221422046262853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221422047311429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221422047511429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512413156202 + ... + 6512413156235.

It is an arithmetic number, because the mean of its divisors is an integer number (58611718405971).

Almost surely, 2^{221422047311429} is an apocalyptic number.

It is an amenable number.

221422047311429 is a deficient number, since it is larger than the sum of its proper divisors (13024826312455).

221422047311429 is a wasteful number, since it uses less digits than its factorization.

221422047311429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13024826312454.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 221422047311429 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, forty-seven million, three hundred eleven thousand, four hundred twenty-nine".