200111122212222 has 128 divisors (see below), whose sum is σ = 445888618560000. Its totient is φ = 59489435625984.

The previous prime is 200111122212203. The next prime is 200111122212257. The reversal of 200111122212222 is 222212221111002.

It is a super-2 number, since 2×200111122212222² (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 in 63 ways as a sum of consecutive naturals, for example, 72086529 + ... + 74811027.

It is an arithmetic number, because the mean of its divisors is an integer number (3483504832500).

Almost surely, 2^{200111122212222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200111122212222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222944309280000).

200111122212222 is an abundant number, since it is smaller than the sum of its proper divisors (245777496347778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200111122212222 is a wasteful number, since it uses less digits than its factorization.

200111122212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724842.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 200111122212222 its reverse (222212221111002), we get a palindrome (422323343323224).

The spelling of 200111122212222 in words is "two hundred trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".