21223020010120 has 32 divisors (see below), whose sum is σ = 49827960025920. Its totient is φ = 8120112003520.

The previous prime is 21223020010069. The next prime is 21223020010123. The reversal of 21223020010120 is 2101002032212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21223020010094 and 21223020010103.

It is not an unprimeable number, because it can be changed into a prime (21223020010123) 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, 11534249086 + ... + 11534250925.

It is an arithmetic number, because the mean of its divisors is an integer number (1557123750810).

Almost surely, 2^{21223020010120} is an apocalyptic number.

21223020010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223020010120 is an abundant number, since it is smaller than the sum of its proper divisors (28604940015800).

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

21223020010120 is a wasteful number, since it uses less digits than its factorization.

21223020010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23068500045 (or 23068500041 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21223020010120 its reverse (2101002032212), we get a palindrome (23324022042332).

The spelling of 21223020010120 in words is "twenty-one trillion, two hundred twenty-three billion, twenty million, ten thousand, one hundred twenty".