103215213512 has 32 divisors (see below), whose sum is σ = 198276928920. Its totient is φ = 50341724160.

The previous prime is 103215213511. The next prime is 103215213551. The reversal of 103215213512 is 215312512301.

It can be written as a sum of positive squares in 4 ways, for example, as 57635525476 + 45579688036 = 240074^2 + 213494^2 .

It is not an unprimeable number, because it can be changed into a prime (103215213511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2847728 + ... + 2883744.

Almost surely, 2^103215213512 is an apocalyptic number.

It is an amenable number.

103215213512 is a deficient number, since it is larger than the sum of its proper divisors (95061715408).

103215213512 is a wasteful number, since it uses less digits than its factorization.

103215213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44801 (or 44797 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 103215213512 its reverse (215312512301), we get a palindrome (318527725813).

The spelling of 103215213512 in words is "one hundred three billion, two hundred fifteen million, two hundred thirteen thousand, five hundred twelve".