3573851874221 has 2 divisors, whose sum is σ = 3573851874222. Its totient is φ = 3573851874220.

The previous prime is 3573851874211. The next prime is 3573851874251. The reversal of 3573851874221 is 1224781583753.

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., 2601320605321 + 972531268900 = 1612861^2 + 986170^2 .

It is a cyclic number.

It is not a de Polignac number, because 3573851874221 - 2¹⁰ = 3573851873197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3573851874211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1786925937110 + 1786925937111.

It is an arithmetic number, because the mean of its divisors is an integer number (1786925937111).

Almost surely, 2^{3573851874221} is an apocalyptic number.

It is an amenable number.

3573851874221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3573851874221 is an equidigital number, since it uses as much as digits as its factorization.

3573851874221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11289600, while the sum is 56.

The spelling of 3573851874221 in words is "three trillion, five hundred seventy-three billion, eight hundred fifty-one million, eight hundred seventy-four thousand, two hundred twenty-one".