1221250631054 has 16 divisors (see below), whose sum is σ = 1904663613600. Its totient is φ = 586576527264.

The previous prime is 1221250631033. The next prime is 1221250631077. The reversal of 1221250631054 is 4501360521221.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221250631054.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53430314 + ... + 53453165.

It is an arithmetic number, because the mean of its divisors is an integer number (119041475850).

Almost surely, 2^{1221250631054} is an apocalyptic number.

1221250631054 is a deficient number, since it is larger than the sum of its proper divisors (683412982546).

1221250631054 is a wasteful number, since it uses less digits than its factorization.

1221250631054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106883707.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 1221250631054 in words is "one trillion, two hundred twenty-one billion, two hundred fifty million, six hundred thirty-one thousand, fifty-four".