11921269 has 2 divisors, whose sum is σ = 11921270. Its totient is φ = 11921268.

The previous prime is 11921263. The next prime is 11921297. The reversal of 11921269 is 96212911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 18769 = 3450^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 11921269 - 2¹⁵ = 11888501 is a prime.

It is a super-2 number, since 2×11921269² = 284233309140722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11921269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11921263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5960634 + 5960635.

It is an arithmetic number, because the mean of its divisors is an integer number (5960635).

Almost surely, 2^11921269 is an apocalyptic number.

It is an amenable number.

11921269 is a deficient number, since it is larger than the sum of its proper divisors (1).

11921269 is an equidigital number, since it uses as much as digits as its factorization.

11921269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 11921269 is about 3452.7190734260. The cubic root of 11921269 is about 228.4410578530.

The spelling of 11921269 in words is "eleven million, nine hundred twenty-one thousand, two hundred sixty-nine".