20010123133 has 32 divisors (see below), whose sum is σ = 27733450752. Its totient is φ = 13928587200.

The previous prime is 20010123109. The next prime is 20010123157. The reversal of 20010123133 is 33132101002.

It is an interprime number because it is at equal distance from previous prime (20010123109) and next prime (20010123157).

It is not a de Polignac number, because 20010123133 - 2⁵ = 20010123101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010123233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291391 + ... + 353452.

It is an arithmetic number, because the mean of its divisors is an integer number (866670336).

Almost surely, 2^20010123133 is an apocalyptic number.

It is an amenable number.

20010123133 is a deficient number, since it is larger than the sum of its proper divisors (7723327619).

20010123133 is a wasteful number, since it uses less digits than its factorization.

20010123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644905.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20010123133 its reverse (33132101002), we get a palindrome (53142224135).

The spelling of 20010123133 in words is "twenty billion, ten million, one hundred twenty-three thousand, one hundred thirty-three".