1221250631053 has 16 divisors (see below), whose sum is σ = 1242760296960. Its totient is φ = 1199840786496.

The previous prime is 1221250631033. The next prime is 1221250631077. The reversal of 1221250631053 is 3501360521221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221250631053 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 (1221250631033) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53427975 + ... + 53450827.

It is an arithmetic number, because the mean of its divisors is an integer number (77672518560).

Almost surely, 2^{1221250631053} is an apocalyptic number.

It is an amenable number.

1221250631053 is a deficient number, since it is larger than the sum of its proper divisors (21509665907).

1221250631053 is a wasteful number, since it uses less digits than its factorization.

1221250631053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24996.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 1221250631053 in words is "one trillion, two hundred twenty-one billion, two hundred fifty million, six hundred thirty-one thousand, fifty-three".