103021231222121 has 4 divisors (see below), whose sum is σ = 103471105594500. Its totient is φ = 102571356849744.

The previous prime is 103021231222109. The next prime is 103021231222181. The reversal of 103021231222121 is 121222132120301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90566056224400 + 12455174997721 = 9516620^2 + 3529189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103021231222121 is a prime.

It is a super-2 number, since 2×103021231222121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (103021231222181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224937185846 + ... + 224937186303.

It is an arithmetic number, because the mean of its divisors is an integer number (25867776398625).

Almost surely, 2^{103021231222121} is an apocalyptic number.

It is an amenable number.

103021231222121 is a deficient number, since it is larger than the sum of its proper divisors (449874372379).

103021231222121 is an equidigital number, since it uses as much as digits as its factorization.

103021231222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449874372378.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 103021231222121 its reverse (121222132120301), we get a palindrome (224243363342422).

The spelling of 103021231222121 in words is "one hundred three trillion, twenty-one billion, two hundred thirty-one million, two hundred twenty-two thousand, one hundred twenty-one".