1220260571651 has 8 divisors (see below), whose sum is σ = 1351061909184. Its totient is φ = 1092770660520.

The previous prime is 1220260571641. The next prime is 1220260571671. The reversal of 1220260571651 is 1561750620221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1220260571651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220260571641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827855825 + ... + 827857298.

It is an arithmetic number, because the mean of its divisors is an integer number (168882738648).

Almost surely, 2^{1220260571651} is an apocalyptic number.

1220260571651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220260571651 is a deficient number, since it is larger than the sum of its proper divisors (130801337533).

1220260571651 is a wasteful number, since it uses less digits than its factorization.

1220260571651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655713201.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 1220260571651 in words is "one trillion, two hundred twenty billion, two hundred sixty million, five hundred seventy-one thousand, six hundred fifty-one".