22102121100220 has 48 divisors (see below), whose sum is σ = 53045546093568. Its totient is φ = 7577805026880.

The previous prime is 22102121100197. The next prime is 22102121100259. The reversal of 22102121100220 is 2200112120122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22102121100194 and 22102121100203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17402205 + ... + 18629035.

It is an arithmetic number, because the mean of its divisors is an integer number (1105115543616).

Almost surely, 2^{22102121100220} is an apocalyptic number.

22102121100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22102121100220 is an abundant number, since it is smaller than the sum of its proper divisors (30943424993348).

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

22102121100220 is a wasteful number, since it uses less digits than its factorization.

22102121100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355530 (or 1355528 counting only the distinct ones).

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

Adding to 22102121100220 its reverse (2200112120122), we get a palindrome (24302233220342).

The spelling of 22102121100220 in words is "twenty-two trillion, one hundred two billion, one hundred twenty-one million, one hundred thousand, two hundred twenty".