221421327265151 has 8 divisors (see below), whose sum is σ = 238785383430720. Its totient is φ = 204104649153312.

The previous prime is 221421327265147. The next prime is 221421327265163. The reversal of 221421327265151 is 151562723124122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221421327265151 - 2² = 221421327265147 is a prime.

It is a super-2 number, since 2×221421327265151² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221421327265181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11844503720 + ... + 11844522413.

It is an arithmetic number, because the mean of its divisors is an integer number (29848172928840).

Almost surely, 2^{221421327265151} is an apocalyptic number.

221421327265151 is a deficient number, since it is larger than the sum of its proper divisors (17364056165569).

221421327265151 is a wasteful number, since it uses less digits than its factorization.

221421327265151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23689026865.

The product of its digits is 403200, while the sum is 44.

The spelling of 221421327265151 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, three hundred twenty-seven million, two hundred sixty-five thousand, one hundred fifty-one".