21202222121120 has 48 divisors (see below), whose sum is σ = 51155999774208. Its totient is φ = 8300444401920.

The previous prime is 21202222121111. The next prime is 21202222121219. The reversal of 21202222121120 is 2112122220212.

It is a super-3 number, since 3×21202222121120³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21202222121092 and 21202222121101.

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, 1409714696 + ... + 1409729735.

It is an arithmetic number, because the mean of its divisors is an integer number (1065749995296).

Almost surely, 2^{21202222121120} is an apocalyptic number.

21202222121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202222121120 is an abundant number, since it is smaller than the sum of its proper divisors (29953777653088).

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

21202222121120 is a wasteful number, since it uses less digits than its factorization.

21202222121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819444493 (or 2819444485 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21202222121120 its reverse (2112122220212), we get a palindrome (23314344341332).

The spelling of 21202222121120 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty".