20002123000 has 32 divisors (see below), whose sum is σ = 46804970160. Its totient is φ = 8000848800.

The previous prime is 20002122997. The next prime is 20002123033. The reversal of 20002123000 is 32120002.

It is a super-4 number, since 4×20002123000⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10000062 + ... + 10002061.

Almost surely, 2^20002123000 is an apocalyptic number.

20002123000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002123000 is an abundant number, since it is smaller than the sum of its proper divisors (26802847160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20002123000 is a wasteful number, since it uses less digits than its factorization.

20002123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20002144 (or 20002130 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20002123000 its reverse (32120002), we get a palindrome (20034243002).

The spelling of 20002123000 in words is "twenty billion, two million, one hundred twenty-three thousand".