12211103320021 has 8 divisors (see below), whose sum is σ = 12415570559000. Its totient is φ = 12008239746048.

The previous prime is 12211103319991. The next prime is 12211103320051. The reversal of 12211103320021 is 12002330111221.

It is an interprime number because it is at equal distance from previous prime (12211103319991) and next prime (12211103320051).

It can be written as a sum of positive squares in 4 ways, for example, as 906378257521 + 11304725062500 = 952039^2 + 3362250^2 .

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 12211103320021 - 2⁷ = 12211103319893 is a prime.

It is a super-2 number, since 2×12211103320021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211103320051) 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, 400900896 + ... + 400931353.

It is an arithmetic number, because the mean of its divisors is an integer number (1551946319875).

Almost surely, 2^{12211103320021} is an apocalyptic number.

It is an amenable number.

12211103320021 is a deficient number, since it is larger than the sum of its proper divisors (204467238979).

12211103320021 is an equidigital number, since it uses as much as digits as its factorization.

12211103320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801832503.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12211103320021 its reverse (12002330111221), we get a palindrome (24213433431242).

The spelling of 12211103320021 in words is "twelve trillion, two hundred eleven billion, one hundred three million, three hundred twenty thousand, twenty-one".