1051123421003 has 16 divisors (see below), whose sum is σ = 1117515775200. Its totient is φ = 986946992640.

The previous prime is 1051123420987. The next prime is 1051123421053. The reversal of 1051123421003 is 3001243211501.

It is a cyclic number.

It is not a de Polignac number, because 1051123421003 - 2⁴ = 1051123420987 is a prime.

It is a super-2 number, since 2×1051123421003² (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 1051123421003.

It is not an unprimeable number, because it can be changed into a prime (1051123421053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554878 + ... + 2126003.

It is an arithmetic number, because the mean of its divisors is an integer number (69844735950).

Almost surely, 2^{1051123421003} is an apocalyptic number.

1051123421003 is a deficient number, since it is larger than the sum of its proper divisors (66392354197).

1051123421003 is a wasteful number, since it uses less digits than its factorization.

1051123421003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681182.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 1051123421003 its reverse (3001243211501), we get a palindrome (4052366632504).

The spelling of 1051123421003 in words is "one trillion, fifty-one billion, one hundred twenty-three million, four hundred twenty-one thousand, three".