1220105453651 has 32 divisors (see below), whose sum is σ = 1428215846400. Its totient is φ = 1041874880928.

The previous prime is 1220105453639. The next prime is 1220105453657. The reversal of 1220105453651 is 1563545010221.

It is not a de Polignac number, because 1220105453651 - 2⁶ = 1220105453587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220105453657) 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 31 ways as a sum of consecutive naturals, for example, 309120260 + ... + 309124206.

It is an arithmetic number, because the mean of its divisors is an integer number (44631745200).

Almost surely, 2^{1220105453651} is an apocalyptic number.

1220105453651 is a deficient number, since it is larger than the sum of its proper divisors (208110392749).

1220105453651 is an equidigital number, since it uses as much as digits as its factorization.

1220105453651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128 (or 7114 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 1220105453651 in words is "one trillion, two hundred twenty billion, one hundred five million, four hundred fifty-three thousand, six hundred fifty-one".