1012315550203 has 4 divisors (see below), whose sum is σ = 1014958672128. Its totient is φ = 1009672428280.

The previous prime is 1012315550189. The next prime is 1012315550209. The reversal of 1012315550203 is 3020555132101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012315550203 is a prime.

It is a super-2 number, since 2×1012315550203² (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 (1012315550209) 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, 1321560388 + ... + 1321561153.

It is an arithmetic number, because the mean of its divisors is an integer number (253739668032).

Almost surely, 2^{1012315550203} is an apocalyptic number.

1012315550203 is a deficient number, since it is larger than the sum of its proper divisors (2643121925).

1012315550203 is an equidigital number, since it uses as much as digits as its factorization.

1012315550203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643121924.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 1012315550203 in words is "one trillion, twelve billion, three hundred fifteen million, five hundred fifty thousand, two hundred three".