1012230311123 has 4 divisors (see below), whose sum is σ = 1047134804640. Its totient is φ = 977325817608.

The previous prime is 1012230311117. The next prime is 1012230311171. The reversal of 1012230311123 is 3211130322101.

It is a happy number.

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 1012230311123 - 2⁴ = 1012230311107 is a prime.

It is a super-2 number, since 2×1012230311123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012230311095 and 1012230311104.

It is not an unprimeable number, because it can be changed into a prime (1012230371123) 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, 17452246715 + ... + 17452246772.

It is an arithmetic number, because the mean of its divisors is an integer number (261783701160).

Almost surely, 2^{1012230311123} is an apocalyptic number.

1012230311123 is a deficient number, since it is larger than the sum of its proper divisors (34904493517).

1012230311123 is an equidigital number, since it uses as much as digits as its factorization.

1012230311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34904493516.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1012230311123 its reverse (3211130322101), we get a palindrome (4223360633224).

The spelling of 1012230311123 in words is "one trillion, twelve billion, two hundred thirty million, three hundred eleven thousand, one hundred twenty-three".