151142430221 has 4 divisors (see below), whose sum is σ = 151143430944. Its totient is φ = 151141429500.

The previous prime is 151142430211. The next prime is 151142430227. The reversal of 151142430221 is 122034241151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122034241151 = 547 ⋅223097333.

It is a cyclic number.

It is not a de Polignac number, because 151142430221 - 2¹⁴ = 151142413837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151142430227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222305 + ... + 593046.

It is an arithmetic number, because the mean of its divisors is an integer number (37785857736).

Almost surely, 2^151142430221 is an apocalyptic number.

It is an amenable number.

151142430221 is a deficient number, since it is larger than the sum of its proper divisors (1000723).

151142430221 is an equidigital number, since it uses as much as digits as its factorization.

151142430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000722.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 151142430221 its reverse (122034241151), we get a palindrome (273176671372).

The spelling of 151142430221 in words is "one hundred fifty-one billion, one hundred forty-two million, four hundred thirty thousand, two hundred twenty-one".