2020201199981 has 2 divisors, whose sum is σ = 2020201199982. Its totient is φ = 2020201199980.

The previous prime is 2020201199971. The next prime is 2020201200011. The reversal of 2020201199981 is 1899911020202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016709571881 + 3491628100 = 1420109^2 + 59090^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020201199981 - 2²⁶ = 2020134091117 is a prime.

It is a super-2 number, since 2×2020201199981² (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 (2020201199941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010100599990 + 1010100599991.

It is an arithmetic number, because the mean of its divisors is an integer number (1010100599991).

Almost surely, 2^{2020201199981} is an apocalyptic number.

It is an amenable number.

2020201199981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020201199981 is an equidigital number, since it uses as much as digits as its factorization.

2020201199981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 44.

The spelling of 2020201199981 in words is "two trillion, twenty billion, two hundred one million, one hundred ninety-nine thousand, nine hundred eighty-one".