22121220220222 has 8 divisors (see below), whose sum is σ = 33182666200656. Its totient is φ = 11060331486672.

The previous prime is 22121220220219. The next prime is 22121220220241. The reversal of 22121220220222 is 22202202212122.

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

It is a junction number, because it is equal to n+sod(n) for n = 22121220220193 and 22121220220202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139212463 + ... + 139371274.

It is an arithmetic number, because the mean of its divisors is an integer number (4147833275082).

Almost surely, 2^{22121220220222} is an apocalyptic number.

22121220220222 is a deficient number, since it is larger than the sum of its proper divisors (11061445980434).

22121220220222 is a wasteful number, since it uses less digits than its factorization.

22121220220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278623442.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22121220220222 its reverse (22202202212122), we get a palindrome (44323422432344).

The spelling of 22121220220222 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, two hundred twenty-two".