1021130000123 has 4 divisors (see below), whose sum is σ = 1074873684360. Its totient is φ = 967386315888.

The previous prime is 1021130000101. The next prime is 1021130000129. The reversal of 1021130000123 is 3210000311201.

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 1021130000123 - 2²⁶ = 1021062891259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021130000098 and 1021130000107.

It is not an unprimeable number, because it can be changed into a prime (1021130000129) 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, 26871842090 + ... + 26871842127.

It is an arithmetic number, because the mean of its divisors is an integer number (268718421090).

Almost surely, 2^{1021130000123} is an apocalyptic number.

1021130000123 is a deficient number, since it is larger than the sum of its proper divisors (53743684237).

1021130000123 is an equidigital number, since it uses as much as digits as its factorization.

1021130000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53743684236.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1021130000123 its reverse (3210000311201), we get a palindrome (4231130311324).

The spelling of 1021130000123 in words is "one trillion, twenty-one billion, one hundred thirty million, one hundred twenty-three", and thus it is an aban number.