21120022103 has 2 divisors, whose sum is σ = 21120022104. Its totient is φ = 21120022102.

The previous prime is 21120022087. The next prime is 21120022111. The reversal of 21120022103 is 30122002112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21120022103 - 2⁴ = 21120022087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120021103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560011051 + 10560011052.

It is an arithmetic number, because the mean of its divisors is an integer number (10560011052).

Almost surely, 2^21120022103 is an apocalyptic number.

21120022103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120022103 is an equidigital number, since it uses as much as digits as its factorization.

21120022103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21120022103 its reverse (30122002112), we get a palindrome (51242024215).

The spelling of 21120022103 in words is "twenty-one billion, one hundred twenty million, twenty-two thousand, one hundred three".