1002101123 has 2 divisors, whose sum is σ = 1002101124. Its totient is φ = 1002101122.

The previous prime is 1002101077. The next prime is 1002101141. The reversal of 1002101123 is 3211012001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002101123 is a prime.

It is a super-2 number, since 2×1002101123² = 2008413321435722258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002101143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501050561 + 501050562.

It is an arithmetic number, because the mean of its divisors is an integer number (501050562).

Almost surely, 2^1002101123 is an apocalyptic number.

1002101123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002101123 is an equidigital number, since it uses as much as digits as its factorization.

1002101123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1002101123 is about 31655.9808409090. The cubic root of 1002101123 is about 1000.6998843809.

Adding to 1002101123 its reverse (3211012001), we get a palindrome (4213113124).

The spelling of 1002101123 in words is "one billion, two million, one hundred one thousand, one hundred twenty-three".