201921848833 has 2 divisors, whose sum is σ = 201921848834. Its totient is φ = 201921848832.

The previous prime is 201921848749. The next prime is 201921848939. The reversal of 201921848833 is 338848129102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152078160784 + 49843688049 = 389972^2 + 223257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201921848833 is a prime.

It is a super-2 number, since 2×201921848833² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201921848533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100960924416 + 100960924417.

It is an arithmetic number, because the mean of its divisors is an integer number (100960924417).

Almost surely, 2^201921848833 is an apocalyptic number.

It is an amenable number.

201921848833 is a deficient number, since it is larger than the sum of its proper divisors (1).

201921848833 is an equidigital number, since it uses as much as digits as its factorization.

201921848833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 201921848833 in words is "two hundred one billion, nine hundred twenty-one million, eight hundred forty-eight thousand, eight hundred thirty-three".