221926853 has 2 divisors, whose sum is σ = 221926854. Its totient is φ = 221926852.

The previous prime is 221926849. The next prime is 221926889. The reversal of 221926853 is 358629122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221473924 + 452929 = 14882^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 221926853 - 2² = 221926849 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221926813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110963426 + 110963427.

It is an arithmetic number, because the mean of its divisors is an integer number (110963427).

Almost surely, 2^221926853 is an apocalyptic number.

It is an amenable number.

221926853 is a deficient number, since it is larger than the sum of its proper divisors (1).

221926853 is an equidigital number, since it uses as much as digits as its factorization.

221926853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 221926853 is about 14897.2095709230. The cubic root of 221926853 is about 605.4383845432.

The spelling of 221926853 in words is "two hundred twenty-one million, nine hundred twenty-six thousand, eight hundred fifty-three".