3523740473221 has 2 divisors, whose sum is σ = 3523740473222. Its totient is φ = 3523740473220.

The previous prime is 3523740473189. The next prime is 3523740473261. The reversal of 3523740473221 is 1223740473253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3154580940996 + 369159532225 = 1776114^2 + 607585^2 .

It is a cyclic number.

It is not a de Polignac number, because 3523740473221 - 2⁵ = 3523740473189 is a prime.

It is a super-2 number, since 2×3523740473221² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3523740473261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1761870236610 + 1761870236611.

It is an arithmetic number, because the mean of its divisors is an integer number (1761870236611).

Almost surely, 2^{3523740473221} is an apocalyptic number.

It is an amenable number.

3523740473221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3523740473221 is an equidigital number, since it uses as much as digits as its factorization.

3523740473221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 43.

The spelling of 3523740473221 in words is "three trillion, five hundred twenty-three billion, seven hundred forty million, four hundred seventy-three thousand, two hundred twenty-one".