1020101123 has 8 divisors (see below), whose sum is σ = 1046833200. Its totient is φ = 993646368.

The previous prime is 1020101119. The next prime is 1020101141. The reversal of 1020101123 is 3211010201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020101123 - 2² = 1020101119 is a prime.

It is a super-2 number, since 2×1020101123² = 2081212602291722258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020101143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61868 + ... + 76601.

It is an arithmetic number, because the mean of its divisors is an integer number (130854150).

Almost surely, 2^1020101123 is an apocalyptic number.

1020101123 is a deficient number, since it is larger than the sum of its proper divisors (26732077).

1020101123 is a wasteful number, since it uses less digits than its factorization.

1020101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138661.

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

The square root of 1020101123 is about 31939.0219480810. The cubic root of 1020101123 is about 1006.6559740518.

Adding to 1020101123 its reverse (3211010201), we get a palindrome (4231111324).

The spelling of 1020101123 in words is "one billion, twenty million, one hundred one thousand, one hundred twenty-three".