1053684221221 has 2 divisors, whose sum is σ = 1053684221222. Its totient is φ = 1053684221220.

The previous prime is 1053684221119. The next prime is 1053684221251. The reversal of 1053684221221 is 1221224863501.

1053684221221 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., 880802897121 + 172881324100 = 938511^2 + 415790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053684221221 - 2²³ = 1053675832613 is a prime.

It is a super-2 number, since 2×1053684221221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1053684221251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526842110610 + 526842110611.

It is an arithmetic number, because the mean of its divisors is an integer number (526842110611).

Almost surely, 2^{1053684221221} is an apocalyptic number.

It is an amenable number.

1053684221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053684221221 is an equidigital number, since it uses as much as digits as its factorization.

1053684221221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 1053684221221 in words is "one trillion, fifty-three billion, six hundred eighty-four million, two hundred twenty-one thousand, two hundred twenty-one".