20211020222222 has 16 divisors (see below), whose sum is σ = 30408074030160. Its totient is φ = 10075041537792.

The previous prime is 20211020222201. The next prime is 20211020222269. The reversal of 20211020222222 is 22222202011202.

It is a junction number, because it is equal to n+sod(n) for n = 20211020222194 and 20211020222203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10618472 + ... + 12376347.

It is an arithmetic number, because the mean of its divisors is an integer number (1900504626885).

Almost surely, 2^{20211020222222} is an apocalyptic number.

20211020222222 is a deficient number, since it is larger than the sum of its proper divisors (10197053807938).

20211020222222 is a wasteful number, since it uses less digits than its factorization.

20211020222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22996147.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20211020222222 its reverse (22222202011202), we get a palindrome (42433222233424).

The spelling of 20211020222222 in words is "twenty trillion, two hundred eleven billion, twenty million, two hundred twenty-two thousand, two hundred twenty-two".