1012003121123 has 16 divisors (see below), whose sum is σ = 1060013889792. Its totient is φ = 964333524000.

The previous prime is 1012003121119. The next prime is 1012003121191. The reversal of 1012003121123 is 3211213002101.

1012003121123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1012003121123 - 2² = 1012003121119 is a prime.

It is a super-2 number, since 2×1012003121123² (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 (1012003121923) 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, 6369833 + ... + 6526773.

It is an arithmetic number, because the mean of its divisors is an integer number (66250868112).

Almost surely, 2^{1012003121123} is an apocalyptic number.

1012003121123 is a deficient number, since it is larger than the sum of its proper divisors (48010768669).

1012003121123 is a wasteful number, since it uses less digits than its factorization.

1012003121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158026.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1012003121123 its reverse (3211213002101), we get a palindrome (4223216123224).

The spelling of 1012003121123 in words is "one trillion, twelve billion, three million, one hundred twenty-one thousand, one hundred twenty-three".