151221242330 has 32 divisors (see below), whose sum is σ = 274070301840. Its totient is φ = 60073804800.

The previous prime is 151221242279. The next prime is 151221242351. The reversal of 151221242330 is 33242122151.

It can be written as a sum of positive squares in 8 ways, for example, as 150926811049 + 294431281 = 388493^2 + 17159^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 151221242330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835952 + ... + 1000628.

Almost surely, 2^151221242330 is an apocalyptic number.

151221242330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151221242330 is a deficient number, since it is larger than the sum of its proper divisors (122849059510).

151221242330 is a wasteful number, since it uses less digits than its factorization.

151221242330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165314.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 151221242330 its reverse (33242122151), we get a palindrome (184463364481).

The spelling of 151221242330 in words is "one hundred fifty-one billion, two hundred twenty-one million, two hundred forty-two thousand, three hundred thirty".