221134082437 has 2 divisors, whose sum is σ = 221134082438. Its totient is φ = 221134082436.

The previous prime is 221134082359. The next prime is 221134082447. The reversal of 221134082437 is 734280431122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130119639841 + 91014442596 = 360721^2 + 301686^2 .

It is a cyclic number.

It is not a de Polignac number, because 221134082437 - 2¹¹ = 221134080389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221134082396 and 221134082405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221134082447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110567041218 + 110567041219.

It is an arithmetic number, because the mean of its divisors is an integer number (110567041219).

Almost surely, 2^221134082437 is an apocalyptic number.

It is an amenable number.

221134082437 is a deficient number, since it is larger than the sum of its proper divisors (1).

221134082437 is an equidigital number, since it uses as much as digits as its factorization.

221134082437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 221134082437 in words is "two hundred twenty-one billion, one hundred thirty-four million, eighty-two thousand, four hundred thirty-seven".