12155222310541 has 4 divisors (see below), whose sum is σ = 12155917587552. Its totient is φ = 12154527033532.

The previous prime is 12155222310457. The next prime is 12155222310577. The reversal of 12155222310541 is 14501322255121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12155222310541 - 2²⁷ = 12155088092813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12155222310497 and 12155222310506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155222311541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347612281 + ... + 347647246.

It is an arithmetic number, because the mean of its divisors is an integer number (3038979396888).

Almost surely, 2^{12155222310541} is an apocalyptic number.

It is an amenable number.

12155222310541 is a deficient number, since it is larger than the sum of its proper divisors (695277011).

12155222310541 is an equidigital number, since it uses as much as digits as its factorization.

12155222310541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695277010.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 12155222310541 its reverse (14501322255121), we get a palindrome (26656544565662).

The spelling of 12155222310541 in words is "twelve trillion, one hundred fifty-five billion, two hundred twenty-two million, three hundred ten thousand, five hundred forty-one".