15120223205 has 16 divisors (see below), whose sum is σ = 18362798064. Its totient is φ = 11951170560.

The previous prime is 15120223169. The next prime is 15120223211. The reversal of 15120223205 is 50232202151.

It can be written as a sum of positive squares in 8 ways, for example, as 2091598756 + 13028624449 = 45734^2 + 114143^2 .

It is not a de Polignac number, because 15120223205 - 2¹⁰ = 15120222181 is a prime.

It is a super-2 number, since 2×15120223205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136895 + ... + 221315.

It is an arithmetic number, because the mean of its divisors is an integer number (1147674879).

Almost surely, 2^15120223205 is an apocalyptic number.

It is an amenable number.

15120223205 is a deficient number, since it is larger than the sum of its proper divisors (3242574859).

15120223205 is a wasteful number, since it uses less digits than its factorization.

15120223205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84856.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 15120223205 its reverse (50232202151), we get a palindrome (65352425356).

The spelling of 15120223205 in words is "fifteen billion, one hundred twenty million, two hundred twenty-three thousand, two hundred five".