1220445302445 has 24 divisors (see below), whose sum is σ = 2116193448096. Its totient is φ = 650671877088.

The previous prime is 1220445302441. The next prime is 1220445302449. The reversal of 1220445302445 is 5442035440221.

1220445302445 is a `hidden beast` number, since 1 + 2 + 20 + 44 + 530 + 24 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (1220445302441) and next prime (1220445302449).

It is not a de Polignac number, because 1220445302445 - 2² = 1220445302441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220445302441) 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, 4711719 + ... + 4963988.

It is an arithmetic number, because the mean of its divisors is an integer number (88174727004).

Almost surely, 2^{1220445302445} is an apocalyptic number.

1220445302445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220445302445 is a deficient number, since it is larger than the sum of its proper divisors (895748145651).

1220445302445 is a wasteful number, since it uses less digits than its factorization.

1220445302445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9678521 (or 9678518 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

The spelling of 1220445302445 in words is "one trillion, two hundred twenty billion, four hundred forty-five million, three hundred two thousand, four hundred forty-five".