2201001299821 has 2 divisors, whose sum is σ = 2201001299822. Its totient is φ = 2201001299820.

The previous prime is 2201001299723. The next prime is 2201001299837. The reversal of 2201001299821 is 1289921001022.

2201001299821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401112546596 + 799888753225 = 1183686^2 + 894365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2201001299821 - 2⁹ = 2201001299309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2201001299881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100500649910 + 1100500649911.

It is an arithmetic number, because the mean of its divisors is an integer number (1100500649911).

Almost surely, 2^{2201001299821} is an apocalyptic number.

It is an amenable number.

2201001299821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201001299821 is an equidigital number, since it uses as much as digits as its factorization.

2201001299821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 2201001299821 in words is "two trillion, two hundred one billion, one million, two hundred ninety-nine thousand, eight hundred twenty-one".