20211222210022 has 4 divisors (see below), whose sum is σ = 30316833315036. Its totient is φ = 10105611105010.

The previous prime is 20211222209987. The next prime is 20211222210037. The reversal of 20211222210022 is 22001222211202.

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

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, 5052805552504 + ... + 5052805552507.

It is an arithmetic number, because the mean of its divisors is an integer number (7579208328759).

Almost surely, 2^{20211222210022} is an apocalyptic number.

20211222210022 is a deficient number, since it is larger than the sum of its proper divisors (10105611105014).

20211222210022 is a wasteful number, since it uses less digits than its factorization.

20211222210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105611105013.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20211222210022 its reverse (22001222211202), we get a palindrome (42212444421224).

The spelling of 20211222210022 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, twenty-two".