151271145221 has 16 divisors (see below), whose sum is σ = 178391664000. Its totient is φ = 128204090784.

The previous prime is 151271145149. The next prime is 151271145269. The reversal of 151271145221 is 122541172151.

It is not a de Polignac number, because 151271145221 - 2¹⁸ = 151270883077 is a prime.

It is a super-2 number, since 2×151271145221² (a number of 23 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 (151271145121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2447135 + ... + 2508188.

It is an arithmetic number, because the mean of its divisors is an integer number (11149479000).

Almost surely, 2^151271145221 is an apocalyptic number.

It is an amenable number.

151271145221 is a deficient number, since it is larger than the sum of its proper divisors (27120518779).

151271145221 is an frugal number, since it uses more digits than its factorization.

151271145221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955433 (or 4955419 counting only the distinct ones).

The product of its digits is 5600, while the sum is 32.

The spelling of 151271145221 in words is "one hundred fifty-one billion, two hundred seventy-one million, one hundred forty-five thousand, two hundred twenty-one".