101221013103 has 32 divisors (see below), whose sum is σ = 155875958784. Its totient is φ = 57228014592.

The previous prime is 101221013087. The next prime is 101221013123. The reversal of 101221013103 is 301310122101.

It is a happy number.

It is not a de Polignac number, because 101221013103 - 2⁴ = 101221013087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221013123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13515826 + ... + 13523312.

It is an arithmetic number, because the mean of its divisors is an integer number (4871123712).

Almost surely, 2^101221013103 is an apocalyptic number.

101221013103 is a deficient number, since it is larger than the sum of its proper divisors (54654945681).

101221013103 is an equidigital number, since it uses as much as digits as its factorization.

101221013103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14231.

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

Adding to 101221013103 its reverse (301310122101), we get a palindrome (402531135204).

The spelling of 101221013103 in words is "one hundred one billion, two hundred twenty-one million, thirteen thousand, one hundred three".