22011200211220 has 48 divisors (see below), whose sum is σ = 50746841284608. Its totient is φ = 7953091436160.

The previous prime is 22011200211211. The next prime is 22011200211223. The reversal of 22011200211220 is 2211200211022.

It is a happy number.

It is a super-2 number, since 2×22011200211220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22011200211194 and 22011200211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011200211223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318598932 + ... + 318668011.

It is an arithmetic number, because the mean of its divisors is an integer number (1057225860096).

Almost surely, 2^{22011200211220} is an apocalyptic number.

22011200211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011200211220 is an abundant number, since it is smaller than the sum of its proper divisors (28735641073388).

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

22011200211220 is a wasteful number, since it uses less digits than its factorization.

22011200211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637267120 (or 637267118 counting only the distinct ones).

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

Adding to 22011200211220 its reverse (2211200211022), we get a palindrome (24222400422242).

The spelling of 22011200211220 in words is "twenty-two trillion, eleven billion, two hundred million, two hundred eleven thousand, two hundred twenty".