20100111222 has 32 divisors (see below), whose sum is σ = 40642494048. Its totient is φ = 6626727936.

The previous prime is 20100111203. The next prime is 20100111253. The reversal of 20100111222 is 22211100102.

It is a super-2 number, since 2×20100111222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20100111198 and 20100111207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150168 + ... + 250500.

It is an arithmetic number, because the mean of its divisors is an integer number (1270077939).

Almost surely, 2^20100111222 is an apocalyptic number.

20100111222 is an abundant number, since it is smaller than the sum of its proper divisors (20542382826).

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

20100111222 is a wasteful number, since it uses less digits than its factorization.

20100111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100704.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20100111222 its reverse (22211100102), we get a palindrome (42311211324).

The spelling of 20100111222 in words is "twenty billion, one hundred million, one hundred eleven thousand, two hundred twenty-two".