21212022103 has 8 divisors (see below), whose sum is σ = 21459695040. Its totient is φ = 20964556800.

The previous prime is 21212022071. The next prime is 21212022127. The reversal of 21212022103 is 30122021212.

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 21212022103 - 2⁵ = 21212022071 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 (21212022133) 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, 158551 + ... + 259927.

It is an arithmetic number, because the mean of its divisors is an integer number (2682461880).

Almost surely, 2^21212022103 is an apocalyptic number.

21212022103 is a deficient number, since it is larger than the sum of its proper divisors (247672937).

21212022103 is a wasteful number, since it uses less digits than its factorization.

21212022103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103817.

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

Adding to 21212022103 its reverse (30122021212), we get a palindrome (51334043315).

The spelling of 21212022103 in words is "twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred three".