2002121020023 has 16 divisors (see below), whose sum is σ = 2875416446976. Its totient is φ = 1235530501920.

The previous prime is 2002121020021. The next prime is 2002121020033. The reversal of 2002121020023 is 3200201212002.

It is a happy number.

It is not a de Polignac number, because 2002121020023 - 2¹ = 2002121020021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002121019984 and 2002121020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002121020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468001840 + ... + 468006117.

It is an arithmetic number, because the mean of its divisors is an integer number (179713527936).

Almost surely, 2^{2002121020023} is an apocalyptic number.

2002121020023 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2002121020023 is a deficient number, since it is larger than the sum of its proper divisors (873295426953).

2002121020023 is a wasteful number, since it uses less digits than its factorization.

2002121020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936008014.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2002121020023 its reverse (3200201212002), we get a palindrome (5202322232025).

The spelling of 2002121020023 in words is "two trillion, two billion, one hundred twenty-one million, twenty thousand, twenty-three".