20011220110222 has 72 divisors (see below), whose sum is σ = 34138242887616. Its totient is φ = 8781903504000.

The previous prime is 20011220110169. The next prime is 20011220110229. The reversal of 20011220110222 is 22201102211002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20011220110196 and 20011220110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011220110229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1445786022 + ... + 1445799862.

It is an arithmetic number, because the mean of its divisors is an integer number (474142262328).

Almost surely, 2^{20011220110222} is an apocalyptic number.

20011220110222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20011220110222 is a deficient number, since it is larger than the sum of its proper divisors (14127022777394).

20011220110222 is a wasteful number, since it uses less digits than its factorization.

20011220110222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14774 (or 14324 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20011220110222 its reverse (22201102211002), we get a palindrome (42212322321224).

The spelling of 20011220110222 in words is "twenty trillion, eleven billion, two hundred twenty million, one hundred ten thousand, two hundred twenty-two".