11402332181 has 2 divisors, whose sum is σ = 11402332182. Its totient is φ = 11402332180.

The previous prime is 11402332159. The next prime is 11402332199. The reversal of 11402332181 is 18123320411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9862476100 + 1539856081 = 99310^2 + 39241^2 .

It is a cyclic number.

It is not a de Polignac number, because 11402332181 - 2¹⁴ = 11402315797 is a prime.

It is a super-2 number, since 2×11402332181² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11402332181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11402332141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701166090 + 5701166091.

It is an arithmetic number, because the mean of its divisors is an integer number (5701166091).

Almost surely, 2^11402332181 is an apocalyptic number.

It is an amenable number.

11402332181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11402332181 is an equidigital number, since it uses as much as digits as its factorization.

11402332181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 11402332181 its reverse (18123320411), we get a palindrome (29525652592).

The spelling of 11402332181 in words is "eleven billion, four hundred two million, three hundred thirty-two thousand, one hundred eighty-one".