12020001299981 has 2 divisors, whose sum is σ = 12020001299982. Its totient is φ = 12020001299980.

The previous prime is 12020001299953. The next prime is 12020001300103. The reversal of 12020001299981 is 18999210002021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10625970062500 + 1394031237481 = 3259750^2 + 1180691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020001299981 is a prime.

It is a super-2 number, since 2×12020001299981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020001299951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010000649990 + 6010000649991.

It is an arithmetic number, because the mean of its divisors is an integer number (6010000649991).

Almost surely, 2^{12020001299981} is an apocalyptic number.

It is an amenable number.

12020001299981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020001299981 is an equidigital number, since it uses as much as digits as its factorization.

12020001299981 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 12020001299981 in words is "twelve trillion, twenty billion, one million, two hundred ninety-nine thousand, nine hundred eighty-one".