2000120123021 has 4 divisors (see below), whose sum is σ = 2105389603200. Its totient is φ = 1894850642844.

The previous prime is 2000120123009. The next prime is 2000120123033. The reversal of 2000120123021 is 1203210210002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2000120123009) and next prime (2000120123033).

It is a cyclic number.

It is not a de Polignac number, because 2000120123021 - 2¹⁴ = 2000120106637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2000120122987 and 2000120123005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000120123041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52634740061 + ... + 52634740098.

It is an arithmetic number, because the mean of its divisors is an integer number (526347400800).

Almost surely, 2^{2000120123021} is an apocalyptic number.

It is an amenable number.

2000120123021 is a deficient number, since it is larger than the sum of its proper divisors (105269480179).

2000120123021 is a wasteful number, since it uses less digits than its factorization.

2000120123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105269480178.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2000120123021 its reverse (1203210210002), we get a palindrome (3203330333023).

The spelling of 2000120123021 in words is "two trillion, one hundred twenty million, one hundred twenty-three thousand, twenty-one".