22001002201220 has 24 divisors (see below), whose sum is σ = 52802405283264. Its totient is φ = 7543200754656.

The previous prime is 22001002201177. The next prime is 22001002201229. The reversal of 22001002201220 is 2210220010022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22001002201195 and 22001002201204.

It is not an unprimeable number, because it can be changed into a prime (22001002201229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78575007722 + ... + 78575008001.

It is an arithmetic number, because the mean of its divisors is an integer number (2200100220136).

Almost surely, 2^{22001002201220} is an apocalyptic number.

22001002201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001002201220 is an abundant number, since it is smaller than the sum of its proper divisors (30801403082044).

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

22001002201220 is a wasteful number, since it uses less digits than its factorization.

22001002201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157150015739 (or 157150015737 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22001002201220 its reverse (2210220010022), we get a palindrome (24211222211242).

The spelling of 22001002201220 in words is "twenty-two trillion, one billion, two million, two hundred one thousand, two hundred twenty".