1021012123303 has 4 divisors (see below), whose sum is σ = 1021060280488. Its totient is φ = 1020963966120.

The previous prime is 1021012123279. The next prime is 1021012123309. The reversal of 1021012123303 is 3033212101201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021012123303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021012123309) 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, 24046776 + ... + 24089197.

It is an arithmetic number, because the mean of its divisors is an integer number (255265070122).

Almost surely, 2^{1021012123303} is an apocalyptic number.

1021012123303 is a deficient number, since it is larger than the sum of its proper divisors (48157185).

1021012123303 is an equidigital number, since it uses as much as digits as its factorization.

1021012123303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48157184.

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

Adding to 1021012123303 its reverse (3033212101201), we get a palindrome (4054224224504).

The spelling of 1021012123303 in words is "one trillion, twenty-one billion, twelve million, one hundred twenty-three thousand, three hundred three".