103221101003021 has 4 divisors (see below), whose sum is σ = 106780449313500. Its totient is φ = 99661752692544.

The previous prime is 103221101003003. The next prime is 103221101003051. The reversal of 103221101003021 is 120300101122301.

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 41017120700521 + 62203980302500 = 6404461^2 + 7886950^2 .

It is a cyclic number.

It is not a de Polignac number, because 103221101003021 - 2²⁶ = 103221033894157 is a prime.

It is a super-2 number, since 2×103221101003021² (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 (103221101003051) 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 3 ways as a sum of consecutive naturals, for example, 1779674155196 + ... + 1779674155253.

It is an arithmetic number, because the mean of its divisors is an integer number (26695112328375).

Almost surely, 2^{103221101003021} is an apocalyptic number.

It is an amenable number.

103221101003021 is a deficient number, since it is larger than the sum of its proper divisors (3559348310479).

103221101003021 is an equidigital number, since it uses as much as digits as its factorization.

103221101003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559348310478.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103221101003021 its reverse (120300101122301), we get a palindrome (223521202125322).

The spelling of 103221101003021 in words is "one hundred three trillion, two hundred twenty-one billion, one hundred one million, three thousand, twenty-one".