21220020110000 has 100 divisors (see below), whose sum is σ = 53609521299312. Its totient is φ = 8118964128000.

The previous prime is 21220020109987. The next prime is 21220020110011. The reversal of 21220020110000 is 1102002212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (100).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45900479 + ... + 46360478.

Almost surely, 2^{21220020110000} is an apocalyptic number.

21220020110000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220020110000 is an abundant number, since it is smaller than the sum of its proper divisors (32389501189312).

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

21220020110000 is an equidigital number, since it uses as much as digits as its factorization.

21220020110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92261008 (or 92260987 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21220020110000 its reverse (1102002212), we get a palindrome (21221122112212).

The spelling of 21220020110000 in words is "twenty-one trillion, two hundred twenty billion, twenty million, one hundred ten thousand".