11701221749 has 8 divisors (see below), whose sum is σ = 13542101760. Its totient is φ = 9902660976.

The previous prime is 11701221709. The next prime is 11701221799. The reversal of 11701221749 is 94712210711.

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 11701221749 - 2¹² = 11701217653 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 (11701221709) 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, 10579214 + ... + 10580319.

It is an arithmetic number, because the mean of its divisors is an integer number (1692762720).

Almost surely, 2^11701221749 is an apocalyptic number.

It is an amenable number.

11701221749 is a deficient number, since it is larger than the sum of its proper divisors (1840880011).

11701221749 is an equidigital number, since it uses as much as digits as its factorization.

11701221749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21159619.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 11701221749 in words is "eleven billion, seven hundred one million, two hundred twenty-one thousand, seven hundred forty-nine".