21002203233120 has 96 divisors (see below), whose sum is σ = 66158608868352. Its totient is φ = 5600446264832.

The previous prime is 21002203233097. The next prime is 21002203233131. The reversal of 21002203233120 is 2133230220012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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, 19236619 + ... + 20299061.

It is an arithmetic number, because the mean of its divisors is an integer number (689152175712).

Almost surely, 2^{21002203233120} is an apocalyptic number.

21002203233120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002203233120 is an abundant number, since it is smaller than the sum of its proper divisors (45156405635232).

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

21002203233120 is a wasteful number, since it uses less digits than its factorization.

21002203233120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103644 (or 1103636 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21002203233120 its reverse (2133230220012), we get a palindrome (23135433453132).

The spelling of 21002203233120 in words is "twenty-one trillion, two billion, two hundred three million, two hundred thirty-three thousand, one hundred twenty".