1011020200123 has 2 divisors, whose sum is σ = 1011020200124. Its totient is φ = 1011020200122.

The previous prime is 1011020200097. The next prime is 1011020200129. The reversal of 1011020200123 is 3210020201101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011020200123 - 2³⁷ = 873581246651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011020200129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505510100061 + 505510100062.

It is an arithmetic number, because the mean of its divisors is an integer number (505510100062).

Almost surely, 2^{1011020200123} is an apocalyptic number.

1011020200123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011020200123 is an equidigital number, since it uses as much as digits as its factorization.

1011020200123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1011020200123 its reverse (3210020201101), we get a palindrome (4221040401224).

The spelling of 1011020200123 in words is "one trillion, eleven billion, twenty million, two hundred thousand, one hundred twenty-three".