222727181800821 has 8 divisors (see below), whose sum is σ = 297033344182464. Its totient is φ = 148452903643200.

The previous prime is 222727181800789. The next prime is 222727181800829. The reversal of 222727181800821 is 128008181727222.

It is a happy number.

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

It is not a de Polignac number, because 222727181800821 - 2⁵ = 222727181800789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222727181800829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7971039705 + ... + 7971067646.

It is an arithmetic number, because the mean of its divisors is an integer number (37129168022808).

Almost surely, 2^{222727181800821} is an apocalyptic number.

It is an amenable number.

222727181800821 is a deficient number, since it is larger than the sum of its proper divisors (74306162381643).

222727181800821 is a wasteful number, since it uses less digits than its factorization.

222727181800821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15942112011.

The product of its (nonzero) digits is 802816, while the sum is 51.

The spelling of 222727181800821 in words is "two hundred twenty-two trillion, seven hundred twenty-seven billion, one hundred eighty-one million, eight hundred thousand, eight hundred twenty-one".