20899912301 has 2 divisors, whose sum is σ = 20899912302. Its totient is φ = 20899912300.

The previous prime is 20899912273. The next prime is 20899912331. The reversal of 20899912301 is 10321999802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19958343076 + 941569225 = 141274^2 + 30685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20899912301 is a prime.

It is a super-2 number, since 2×20899912301² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20899912331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10449956150 + 10449956151.

It is an arithmetic number, because the mean of its divisors is an integer number (10449956151).

Almost surely, 2^20899912301 is an apocalyptic number.

It is an amenable number.

20899912301 is a deficient number, since it is larger than the sum of its proper divisors (1).

20899912301 is an equidigital number, since it uses as much as digits as its factorization.

20899912301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 20899912301 in words is "twenty billion, eight hundred ninety-nine million, nine hundred twelve thousand, three hundred one".