1099797100261 has 8 divisors (see below), whose sum is σ = 1130485969184. Its totient is φ = 1069159001040.

The previous prime is 1099797100217. The next prime is 1099797100277. The reversal of 1099797100261 is 1620017979901.

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

It is a cyclic number.

It is not a de Polignac number, because 1099797100261 - 2⁷ = 1099797100133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1099797100199 and 1099797100208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099797100201) 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, 12648495 + ... + 12735148.

It is an arithmetic number, because the mean of its divisors is an integer number (141310746148).

Almost surely, 2^{1099797100261} is an apocalyptic number.

It is an amenable number.

1099797100261 is a deficient number, since it is larger than the sum of its proper divisors (30688868923).

1099797100261 is a wasteful number, since it uses less digits than its factorization.

1099797100261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25384851.

The product of its (nonzero) digits is 428652, while the sum is 52.

The spelling of 1099797100261 in words is "one trillion, ninety-nine billion, seven hundred ninety-seven million, one hundred thousand, two hundred sixty-one".