21162270000 has 100 divisors (see below), whose sum is σ = 68314726040. Its totient is φ = 5643264000.

The previous prime is 21162269981. The next prime is 21162270029. The reversal of 21162270000 is 7226112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 322705 + ... + 382704.

Almost surely, 2^21162270000 is an apocalyptic number.

21162270000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21162270000 is an abundant number, since it is smaller than the sum of its proper divisors (47152456040).

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

21162270000 is an equidigital number, since it uses as much as digits as its factorization.

21162270000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705440 (or 705419 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

Adding to 21162270000 its reverse (7226112), we get a palindrome (21169496112).

The spelling of 21162270000 in words is "twenty-one billion, one hundred sixty-two million, two hundred seventy thousand".