21330022101 has 4 divisors (see below), whose sum is σ = 28440029472. Its totient is φ = 14220014732.

The previous prime is 21330022097. The next prime is 21330022121. The reversal of 21330022101 is 10122003312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21330022101 - 2² = 21330022097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330022121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555003681 + ... + 3555003686.

It is an arithmetic number, because the mean of its divisors is an integer number (7110007368).

Almost surely, 2^21330022101 is an apocalyptic number.

It is an amenable number.

21330022101 is a deficient number, since it is larger than the sum of its proper divisors (7110007371).

21330022101 is an equidigital number, since it uses as much as digits as its factorization.

21330022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110007370.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21330022101 its reverse (10122003312), we get a palindrome (31452025413).

The spelling of 21330022101 in words is "twenty-one billion, three hundred thirty million, twenty-two thousand, one hundred one".