12221101019 has 4 divisors (see below), whose sum is σ = 12221352480. Its totient is φ = 12220849560.

The previous prime is 12221101007. The next prime is 12221101021. The reversal of 12221101019 is 91010112221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221101019 - 2⁴ = 12221101003 is a prime.

It is a super-2 number, since 2×12221101019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221100019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26972 + ... + 158649.

It is an arithmetic number, because the mean of its divisors is an integer number (3055338120).

Almost surely, 2^12221101019 is an apocalyptic number.

12221101019 is a deficient number, since it is larger than the sum of its proper divisors (251461).

12221101019 is an equidigital number, since it uses as much as digits as its factorization.

12221101019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251460.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12221101019 in words is "twelve billion, two hundred twenty-one million, one hundred one thousand, nineteen".