1013320021123 has 4 divisors (see below), whose sum is σ = 1015172526280. Its totient is φ = 1011467515968.

The previous prime is 1013320021121. The next prime is 1013320021151. The reversal of 1013320021123 is 3211200233101.

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 1013320021123 - 2¹ = 1013320021121 is a prime.

It is a super-2 number, since 2×1013320021123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013320021123.

It is not an unprimeable number, because it can be changed into a prime (1013320021121) 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, 926251758 + ... + 926252851.

It is an arithmetic number, because the mean of its divisors is an integer number (253793131570).

Almost surely, 2^{1013320021123} is an apocalyptic number.

1013320021123 is a deficient number, since it is larger than the sum of its proper divisors (1852505157).

1013320021123 is an equidigital number, since it uses as much as digits as its factorization.

1013320021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852505156.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1013320021123 its reverse (3211200233101), we get a palindrome (4224520254224).

The spelling of 1013320021123 in words is "one trillion, thirteen billion, three hundred twenty million, twenty-one thousand, one hundred twenty-three".