11211291293 has 2 divisors, whose sum is σ = 11211291294. Its totient is φ = 11211291292.

The previous prime is 11211291277. The next prime is 11211291307. The reversal of 11211291293 is 39219211211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9236555449 + 1974735844 = 96107^2 + 44438^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211291293 - 2⁴ = 11211291277 is a prime.

It is a super-2 number, since 2×11211291293² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211291233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605645646 + 5605645647.

It is an arithmetic number, because the mean of its divisors is an integer number (5605645647).

Almost surely, 2^11211291293 is an apocalyptic number.

It is an amenable number.

11211291293 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211291293 is an equidigital number, since it uses as much as digits as its factorization.

11211291293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 32.

The spelling of 11211291293 in words is "eleven billion, two hundred eleven million, two hundred ninety-one thousand, two hundred ninety-three".