36842051221 has 2 divisors, whose sum is σ = 36842051222. Its totient is φ = 36842051220.

The previous prime is 36842051203. The next prime is 36842051293. The reversal of 36842051221 is 12215024863.

36842051221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35685099025 + 1156952196 = 188905^2 + 34014^2 .

It is a cyclic number.

It is not a de Polignac number, because 36842051221 - 2⁵ = 36842051189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36842051621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18421025610 + 18421025611.

It is an arithmetic number, because the mean of its divisors is an integer number (18421025611).

Almost surely, 2^36842051221 is an apocalyptic number.

It is an amenable number.

36842051221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36842051221 is an equidigital number, since it uses as much as digits as its factorization.

36842051221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 36842051221 in words is "thirty-six billion, eight hundred forty-two million, fifty-one thousand, two hundred twenty-one".