21222120201103 has 4 divisors (see below), whose sum is σ = 21222246184920. Its totient is φ = 21221994217288.

The previous prime is 21222120201097. The next prime is 21222120201109. The reversal of 21222120201103 is 30110202122212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21222120201097) and next prime (21222120201109).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222120201103 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 (21222120201109) 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, 62738893 + ... + 63076246.

It is an arithmetic number, because the mean of its divisors is an integer number (5305561546230).

Almost surely, 2^{21222120201103} is an apocalyptic number.

21222120201103 is a deficient number, since it is larger than the sum of its proper divisors (125983817).

21222120201103 is a wasteful number, since it uses less digits than its factorization.

21222120201103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125983816.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21222120201103 its reverse (30110202122212), we get a palindrome (51332322323315).

The spelling of 21222120201103 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred one thousand, one hundred three".