1097859013221 has 8 divisors (see below), whose sum is σ = 1463917908544. Its totient is φ = 731853063360.

The previous prime is 1097859013217. The next prime is 1097859013231. The reversal of 1097859013221 is 1223109587901.

It is a happy number.

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

It is not a de Polignac number, because 1097859013221 - 2² = 1097859013217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097859013231) 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, 13187956 + ... + 13270941.

It is an arithmetic number, because the mean of its divisors is an integer number (182989738568).

Almost surely, 2^{1097859013221} is an apocalyptic number.

It is an amenable number.

1097859013221 is a deficient number, since it is larger than the sum of its proper divisors (366058895323).

1097859013221 is a wasteful number, since it uses less digits than its factorization.

1097859013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26472731.

The product of its (nonzero) digits is 272160, while the sum is 48.

The spelling of 1097859013221 in words is "one trillion, ninety-seven billion, eight hundred fifty-nine million, thirteen thousand, two hundred twenty-one".