22000002121220 has 24 divisors (see below), whose sum is σ = 46631780201664. Its totient is φ = 8717757849056.

The previous prime is 22000002121213. The next prime is 22000002121241. The reversal of 22000002121220 is 2212120000022.

It is a junction number, because it is equal to n+sod(n) for n = 22000002121195 and 22000002121204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5140185272 + ... + 5140189551.

It is an arithmetic number, because the mean of its divisors is an integer number (1942990841736).

Almost surely, 2^{22000002121220} is an apocalyptic number.

22000002121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000002121220 is an abundant number, since it is smaller than the sum of its proper divisors (24631778080444).

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

22000002121220 is a wasteful number, since it uses less digits than its factorization.

22000002121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10280374939 (or 10280374937 counting only the distinct ones).

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

Adding to 22000002121220 its reverse (2212120000022), we get a palindrome (24212122121242).

The spelling of 22000002121220 in words is "twenty-two trillion, two million, one hundred twenty-one thousand, two hundred twenty".