221534404134622 has 8 divisors (see below), whose sum is σ = 333565110408816. Its totient is φ = 110346033998352.

The previous prime is 221534404134613. The next prime is 221534404134629. The reversal of 221534404134622 is 226431404435122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221534404134629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210584033823 + ... + 210584034874.

It is an arithmetic number, because the mean of its divisors is an integer number (41695638801102).

Almost surely, 2^{221534404134622} is an apocalyptic number.

221534404134622 is a deficient number, since it is larger than the sum of its proper divisors (112030706274194).

221534404134622 is a wasteful number, since it uses less digits than its factorization.

221534404134622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421168068962.

The product of its (nonzero) digits is 1105920, while the sum is 43.

Adding to 221534404134622 its reverse (226431404435122), we get a palindrome (447965808569744).

The spelling of 221534404134622 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred four million, one hundred thirty-four thousand, six hundred twenty-two".