20010111222 has 64 divisors (see below), whose sum is σ = 42758979840. Its totient is φ = 6220870656.

The previous prime is 20010111221. The next prime is 20010111227. The reversal of 20010111222 is 22211101002.

It is a super-2 number, since 2×20010111222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010111198 and 20010111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010111221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12002833 + ... + 12004499.

It is an arithmetic number, because the mean of its divisors is an integer number (668109060).

Almost surely, 2^20010111222 is an apocalyptic number.

20010111222 is an abundant number, since it is smaller than the sum of its proper divisors (22748868618).

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

20010111222 is a wasteful number, since it uses less digits than its factorization.

20010111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685.

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

Adding to 20010111222 its reverse (22211101002), we get a palindrome (42221212224).

The spelling of 20010111222 in words is "twenty billion, ten million, one hundred eleven thousand, two hundred twenty-two".