221102102020022 has 4 divisors (see below), whose sum is σ = 331653153030036. Its totient is φ = 110551051010010.

The previous prime is 221102102019983. The next prime is 221102102020049. The reversal of 221102102020022 is 220020201201122.

It is a happy number.

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

It is a super-2 number, since 2×221102102020022² (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, 55275525505004 + ... + 55275525505007.

It is an arithmetic number, because the mean of its divisors is an integer number (82913288257509).

Almost surely, 2^{221102102020022} is an apocalyptic number.

221102102020022 is a deficient number, since it is larger than the sum of its proper divisors (110551051010014).

221102102020022 is a wasteful number, since it uses less digits than its factorization.

221102102020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110551051010013.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221102102020022 its reverse (220020201201122), we get a palindrome (441122303221144).

The spelling of 221102102020022 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred two million, twenty thousand, twenty-two".