103102213221221 has 4 divisors (see below), whose sum is σ = 103102345837932. Its totient is φ = 103102080604512.

The previous prime is 103102213221199. The next prime is 103102213221239. The reversal of 103102213221221 is 122122312201301.

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 68254265884996 + 34847947336225 = 8261614^2 + 5903215^2 .

It is a cyclic number.

It is not a de Polignac number, because 103102213221221 - 2¹⁰ = 103102213220197 is a prime.

It is a super-2 number, since 2×103102213221221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103102213121221) 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, 65135270 + ... + 66699383.

It is an arithmetic number, because the mean of its divisors is an integer number (25775586459483).

Almost surely, 2^{103102213221221} is an apocalyptic number.

It is an amenable number.

103102213221221 is a deficient number, since it is larger than the sum of its proper divisors (132616711).

103102213221221 is an equidigital number, since it uses as much as digits as its factorization.

103102213221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132616710.

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

Adding to 103102213221221 its reverse (122122312201301), we get a palindrome (225224525422522).

The spelling of 103102213221221 in words is "one hundred three trillion, one hundred two billion, two hundred thirteen million, two hundred twenty-one thousand, two hundred twenty-one".