1015122352243 has 4 divisors (see below), whose sum is σ = 1015437904840. Its totient is φ = 1014806799648.

The previous prime is 1015122352187. The next prime is 1015122352267. The reversal of 1015122352243 is 3422532215101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1015122352243 - 2¹⁷ = 1015122221171 is a prime.

It is a super-2 number, since 2×1015122352243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015122352273) 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 in 3 ways as a sum of consecutive naturals, for example, 157771473 + ... + 157777906.

It is an arithmetic number, because the mean of its divisors is an integer number (253859476210).

Almost surely, 2^{1015122352243} is an apocalyptic number.

1015122352243 is a deficient number, since it is larger than the sum of its proper divisors (315552597).

1015122352243 is an equidigital number, since it uses as much as digits as its factorization.

1015122352243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315552596.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1015122352243 its reverse (3422532215101), we get a palindrome (4437654567344).

The spelling of 1015122352243 in words is "one trillion, fifteen billion, one hundred twenty-two million, three hundred fifty-two thousand, two hundred forty-three".