11121721327 has 2 divisors, whose sum is σ = 11121721328. Its totient is φ = 11121721326.

The previous prime is 11121721313. The next prime is 11121721393. The reversal of 11121721327 is 72312712111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11121721327 - 2²⁷ = 10987503599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121721295 and 11121721304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11121721927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560860663 + 5560860664.

It is an arithmetic number, because the mean of its divisors is an integer number (5560860664).

Almost surely, 2^11121721327 is an apocalyptic number.

11121721327 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121721327 is an equidigital number, since it uses as much as digits as its factorization.

11121721327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 28.

The spelling of 11121721327 in words is "eleven billion, one hundred twenty-one million, seven hundred twenty-one thousand, three hundred twenty-seven".