1554201220012 has 12 divisors (see below), whose sum is σ = 3108402440080. Its totient is φ = 666086237136.

The previous prime is 1554201220007. The next prime is 1554201220049. The reversal of 1554201220012 is 2100221024551.

1554201220012 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 27753593187 + ... + 27753593242.

Almost surely, 2^{1554201220012} is an apocalyptic number.

It is an amenable number.

1554201220012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1554201220012 is a wasteful number, since it uses less digits than its factorization.

1554201220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55507186440 (or 55507186438 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 1554201220012 its reverse (2100221024551), we get a palindrome (3654422244563).

The spelling of 1554201220012 in words is "one trillion, five hundred fifty-four billion, two hundred one million, two hundred twenty thousand, twelve".