101221103 has 2 divisors, whose sum is σ = 101221104. Its totient is φ = 101221102.

The previous prime is 101221031. The next prime is 101221147. The reversal of 101221103 is 301122101.

Together with previous prime (101221031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101221103 - 2¹² = 101217007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101821103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610551 + 50610552.

It is an arithmetic number, because the mean of its divisors is an integer number (50610552).

Almost surely, 2^101221103 is an apocalyptic number.

101221103 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221103 is an equidigital number, since it uses as much as digits as its factorization.

101221103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 101221103 is about 10060.8698928075. The cubic root of 101221103 is about 466.0405310826.

Adding to 101221103 its reverse (301122101), we get a palindrome (402343204).

The spelling of 101221103 in words is "one hundred one million, two hundred twenty-one thousand, one hundred three".