21202211111120 has 240 divisors, whose sum is σ = 54060275670912. Its totient is φ = 7728693073920.

The previous prime is 21202211111093. The next prime is 21202211111131. The reversal of 21202211111120 is 2111111220212.

21202211111120 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1792083605 + ... + 1792095435.

Almost surely, 2^{21202211111120} is an apocalyptic number.

21202211111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21202211111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27030137835456).

21202211111120 is an abundant number, since it is smaller than the sum of its proper divisors (32858064559792).

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

21202211111120 is a wasteful number, since it uses less digits than its factorization.

21202211111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13550 (or 13531 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21202211111120 its reverse (2111111220212), we get a palindrome (23313322331332).

The spelling of 21202211111120 in words is "twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty".