1220513471751 has 24 divisors (see below), whose sum is σ = 2004396678000. Its totient is φ = 656410605312.

The previous prime is 1220513471713. The next prime is 1220513471773. The reversal of 1220513471751 is 1571743150221.

It is not a de Polignac number, because 1220513471751 - 2⁹ = 1220513471239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220513471791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244197876 + ... + 244202873.

It is an arithmetic number, because the mean of its divisors is an integer number (83516528250).

Almost surely, 2^{1220513471751} is an apocalyptic number.

1220513471751 is a deficient number, since it is larger than the sum of its proper divisors (783883206249).

1220513471751 is a wasteful number, since it uses less digits than its factorization.

1220513471751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488400783 (or 488400776 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 1220513471751 in words is "one trillion, two hundred twenty billion, five hundred thirteen million, four hundred seventy-one thousand, seven hundred fifty-one".