221101222022222 has 4 divisors (see below), whose sum is σ = 331651833033336. Its totient is φ = 110550611011110.

The previous prime is 221101222022171. The next prime is 221101222022267. The reversal of 221101222022222 is 222220222101122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×221101222022222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55275305505554 + ... + 55275305505557.

It is an arithmetic number, because the mean of its divisors is an integer number (82912958258334).

Almost surely, 2^{221101222022222} is an apocalyptic number.

221101222022222 is a deficient number, since it is larger than the sum of its proper divisors (110550611011114).

221101222022222 is a wasteful number, since it uses less digits than its factorization.

221101222022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110550611011113.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221101222022222 its reverse (222220222101122), we get a palindrome (443321444123344).

The spelling of 221101222022222 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-two".