21220322101 has 8 divisors (see below), whose sum is σ = 23154329664. Its totient is φ = 19287129120.

The previous prime is 21220322003. The next prime is 21220322107. The reversal of 21220322101 is 10122302212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21220322101 - 2⁷ = 21220321973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220322107) 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, 148521 + ... + 253966.

It is an arithmetic number, because the mean of its divisors is an integer number (2894291208).

Almost surely, 2^21220322101 is an apocalyptic number.

It is an amenable number.

21220322101 is a deficient number, since it is larger than the sum of its proper divisors (1934007563).

21220322101 is a wasteful number, since it uses less digits than its factorization.

21220322101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407291.

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

Adding to 21220322101 its reverse (10122302212), we get a palindrome (31342624313).

The spelling of 21220322101 in words is "twenty-one billion, two hundred twenty million, three hundred twenty-two thousand, one hundred one".