2000030099981 has 2 divisors, whose sum is σ = 2000030099982. Its totient is φ = 2000030099980.

The previous prime is 2000030099971. The next prime is 2000030100007. The reversal of 2000030099981 is 1899900300002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1966361152900 + 33668947081 = 1402270^2 + 183491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000030099981 - 2²² = 2000025905677 is a prime.

It is a super-2 number, since 2×2000030099981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000030099941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000015049990 + 1000015049991.

It is an arithmetic number, because the mean of its divisors is an integer number (1000015049991).

Almost surely, 2^{2000030099981} is an apocalyptic number.

It is an amenable number.

2000030099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000030099981 is an equidigital number, since it uses as much as digits as its factorization.

2000030099981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

Adding to 2000030099981 its reverse (1899900300002), we get a palindrome (3899930399983).

The spelling of 2000030099981 in words is "two trillion, thirty million, ninety-nine thousand, nine hundred eighty-one".