2010000099981 has 4 divisors (see below), whose sum is σ = 2680000133312. Its totient is φ = 1340000066652.

The previous prime is 2010000099979. The next prime is 2010000100001. The reversal of 2010000099981 is 1899900000102.

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 not a de Polignac number, because 2010000099981 - 2¹ = 2010000099979 is a prime.

It is a super-2 number, since 2×2010000099981² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010000099581) 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, 335000016661 + ... + 335000016666.

It is an arithmetic number, because the mean of its divisors is an integer number (670000033328).

Almost surely, 2^{2010000099981} is an apocalyptic number.

It is an amenable number.

2010000099981 is a deficient number, since it is larger than the sum of its proper divisors (670000033331).

2010000099981 is an equidigital number, since it uses as much as digits as its factorization.

2010000099981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670000033330.

The product of its (nonzero) digits is 11664, while the sum is 39.

It can be divided in two parts, 20 and 10000099981, that added together give a palindrome (10000100001).

The spelling of 2010000099981 in words is "two trillion, ten billion, ninety-nine thousand, nine hundred eighty-one".