151221361612 has 24 divisors (see below), whose sum is σ = 265496658336. Its totient is φ = 75365299968.

The previous prime is 151221361597. The next prime is 151221361657. The reversal of 151221361612 is 216163122151.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5557713 + ... + 5584855.

It is an arithmetic number, because the mean of its divisors is an integer number (11062360764).

Almost surely, 2^151221361612 is an apocalyptic number.

It is an amenable number.

151221361612 is a deficient number, since it is larger than the sum of its proper divisors (114275296724).

151221361612 is a wasteful number, since it uses less digits than its factorization.

151221361612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31617 (or 31615 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

Adding to 151221361612 its reverse (216163122151), we get a palindrome (367384483763).

The spelling of 151221361612 in words is "one hundred fifty-one billion, two hundred twenty-one million, three hundred sixty-one thousand, six hundred twelve".