157241284221 has 32 divisors (see below), whose sum is σ = 255863808000. Its totient is φ = 83955291840.

The previous prime is 157241284217. The next prime is 157241284223. The reversal of 157241284221 is 122482142751.

It is not a de Polignac number, because 157241284221 - 2² = 157241284217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157241284221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157241284223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4145571 + ... + 4183328.

It is an arithmetic number, because the mean of its divisors is an integer number (7995744000).

Almost surely, 2^157241284221 is an apocalyptic number.

It is an amenable number.

157241284221 is a deficient number, since it is larger than the sum of its proper divisors (98622523779).

157241284221 is a wasteful number, since it uses less digits than its factorization.

157241284221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328969.

The product of its digits is 71680, while the sum is 39.

The spelling of 157241284221 in words is "one hundred fifty-seven billion, two hundred forty-one million, two hundred eighty-four thousand, two hundred twenty-one".