21222100101 has 8 divisors (see below), whose sum is σ = 29060893984. Its totient is φ = 13765686480.

The previous prime is 21222100091. The next prime is 21222100117. The reversal of 21222100101 is 10100122212.

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

It is not a de Polignac number, because 21222100101 - 2⁷ = 21222099973 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 (21222100171) 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, 95594935 + ... + 95595156.

It is an arithmetic number, because the mean of its divisors is an integer number (3632611748).

Almost surely, 2^21222100101 is an apocalyptic number.

It is an amenable number.

21222100101 is a deficient number, since it is larger than the sum of its proper divisors (7838793883).

21222100101 is a wasteful number, since it uses less digits than its factorization.

21222100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191190131.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21222100101 its reverse (10100122212), we get a palindrome (31322222313).

The spelling of 21222100101 in words is "twenty-one billion, two hundred twenty-two million, one hundred thousand, one hundred one".