22011202021220 has 48 divisors (see below), whose sum is σ = 47225513922048. Its totient is φ = 8613772540800.

The previous prime is 22011202021181. The next prime is 22011202021229. The reversal of 22011202021220 is 2212020211022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22011202021229) 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, 2191667 + ... + 6987546.

It is an arithmetic number, because the mean of its divisors is an integer number (983864873376).

Almost surely, 2^{22011202021220} is an apocalyptic number.

22011202021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011202021220 is an abundant number, since it is smaller than the sum of its proper divisors (25214311900828).

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

22011202021220 is a wasteful number, since it uses less digits than its factorization.

22011202021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9181820 (or 9181818 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22011202021220 its reverse (2212020211022), we get a palindrome (24223222232242).

The spelling of 22011202021220 in words is "twenty-two trillion, eleven billion, two hundred two million, twenty-one thousand, two hundred twenty".