154421220251112 has 64 divisors (see below), whose sum is σ = 388288692247680. Its totient is φ = 51175660852992.

The previous prime is 154421220251017. The next prime is 154421220251147. The reversal of 154421220251112 is 211152022124451.

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, 645030538 + ... + 645269894.

It is an arithmetic number, because the mean of its divisors is an integer number (6067010816370).

Almost surely, 2^{154421220251112} is an apocalyptic number.

154421220251112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154421220251112 is an abundant number, since it is smaller than the sum of its proper divisors (233867471996568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154421220251112 is a wasteful number, since it uses less digits than its factorization.

154421220251112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394922 (or 394918 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

Adding to 154421220251112 its reverse (211152022124451), we get a palindrome (365573242375563).

The spelling of 154421220251112 in words is "one hundred fifty-four trillion, four hundred twenty-one billion, two hundred twenty million, two hundred fifty-one thousand, one hundred twelve".