1220803252101 has 8 divisors (see below), whose sum is σ = 1808597410560. Its totient is φ = 813868834716.

The previous prime is 1220803252063. The next prime is 1220803252121. The reversal of 1220803252101 is 1012523080221.

1220803252101 is a `hidden beast` number, since 12 + 20 + 80 + 32 + 521 + 0 + 1 = 666.

It is not a de Polignac number, because 1220803252101 - 2²³ = 1220794863493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45214935263 = 1220803252101 / (1 + 2 + 2 + 0 + 8 + 0 + 3 + 2 + 5 + 2 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220803252121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22607467605 + ... + 22607467658.

It is an arithmetic number, because the mean of its divisors is an integer number (226074676320).

Almost surely, 2^{1220803252101} is an apocalyptic number.

It is an amenable number.

1220803252101 is a deficient number, since it is larger than the sum of its proper divisors (587794158459).

1220803252101 is an equidigital number, since it uses as much as digits as its factorization.

1220803252101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45214935272 (or 45214935266 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 1220803252101 in words is "one trillion, two hundred twenty billion, eight hundred three million, two hundred fifty-two thousand, one hundred one".