15120223211 has 2 divisors, whose sum is σ = 15120223212. Its totient is φ = 15120223210.

The previous prime is 15120223169. The next prime is 15120223213. The reversal of 15120223211 is 11232202151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15120223211 is a prime.

It is a super-2 number, since 2×15120223211² (a number of 21 digits) contains 22 as substring.

Together with 15120223213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15120223213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560111605 + 7560111606.

It is an arithmetic number, because the mean of its divisors is an integer number (7560111606).

Almost surely, 2^15120223211 is an apocalyptic number.

15120223211 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120223211 is an equidigital number, since it uses as much as digits as its factorization.

15120223211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 15120223211 its reverse (11232202151), we get a palindrome (26352425362).

The spelling of 15120223211 in words is "fifteen billion, one hundred twenty million, two hundred twenty-three thousand, two hundred eleven".