21022212103 has 2 divisors, whose sum is σ = 21022212104. Its totient is φ = 21022212102.

The previous prime is 21022212097. The next prime is 21022212109. The reversal of 21022212103 is 30121222012.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (21022212097) and next prime (21022212109).

It is a cyclic number.

It is not a de Polignac number, because 21022212103 - 2¹³ = 21022203911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022212109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511106051 + 10511106052.

It is an arithmetic number, because the mean of its divisors is an integer number (10511106052).

Almost surely, 2^21022212103 is an apocalyptic number.

21022212103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022212103 is an equidigital number, since it uses as much as digits as its factorization.

21022212103 is an evil number, because the sum of its binary digits is even.

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

Adding to 21022212103 its reverse (30121222012), we get a palindrome (51143434115).

Subtracting 21022212103 from its reverse (30121222012), we obtain a palindrome (9099009909).

The spelling of 21022212103 in words is "twenty-one billion, twenty-two million, two hundred twelve thousand, one hundred three".