101221031103 has 4 divisors (see below), whose sum is σ = 134961374808. Its totient is φ = 67480687400.

The previous prime is 101221031101. The next prime is 101221031113. The reversal of 101221031103 is 301130122101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101221031103 - 2¹ = 101221031101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221031101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16870171848 + ... + 16870171853.

It is an arithmetic number, because the mean of its divisors is an integer number (33740343702).

Almost surely, 2^101221031103 is an apocalyptic number.

101221031103 is a deficient number, since it is larger than the sum of its proper divisors (33740343705).

101221031103 is an equidigital number, since it uses as much as digits as its factorization.

101221031103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33740343704.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 101221031103 its reverse (301130122101), we get a palindrome (402351153204).

The spelling of 101221031103 in words is "one hundred one billion, two hundred twenty-one million, thirty-one thousand, one hundred three".