221422053126571 has 4 divisors (see below), whose sum is σ = 241551330683544. Its totient is φ = 201292775569600.

The previous prime is 221422053126563. The next prime is 221422053126583. The reversal of 221422053126571 is 175621350224122.

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

It is not a de Polignac number, because 221422053126571 - 2³ = 221422053126563 is a prime.

It is a super-2 number, since 2×221422053126571² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221422053526571) 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, 10064638778470 + ... + 10064638778491.

It is an arithmetic number, because the mean of its divisors is an integer number (60387832670886).

Almost surely, 2^{221422053126571} is an apocalyptic number.

221422053126571 is a deficient number, since it is larger than the sum of its proper divisors (20129277556973).

221422053126571 is a wasteful number, since it uses less digits than its factorization.

221422053126571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20129277556972.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 221422053126571 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, fifty-three million, one hundred twenty-six thousand, five hundred seventy-one".