103221612501 has 32 divisors (see below), whose sum is σ = 157946880000. Its totient is φ = 58737847680.

The previous prime is 103221612479. The next prime is 103221612509. The reversal of 103221612501 is 105216122301.

It is a happy number.

It is not a de Polignac number, because 103221612501 - 2³³ = 94631677909 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221612509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7366500 + ... + 7380498.

It is an arithmetic number, because the mean of its divisors is an integer number (4935840000).

Almost surely, 2^103221612501 is an apocalyptic number.

It is an amenable number.

103221612501 is a deficient number, since it is larger than the sum of its proper divisors (54725267499).

103221612501 is a wasteful number, since it uses less digits than its factorization.

103221612501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15449.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 103221612501 its reverse (105216122301), we get a palindrome (208437734802).

The spelling of 103221612501 in words is "one hundred three billion, two hundred twenty-one million, six hundred twelve thousand, five hundred one".