103021121121221 has 4 divisors (see below), whose sum is σ = 103021915511232. Its totient is φ = 103020326731212.

The previous prime is 103021121121067. The next prime is 103021121121227. The reversal of 103021121121221 is 122121121120301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103021121121221 - 2¹⁸ = 103021120859077 is a prime.

It is a super-2 number, since 2×103021121121221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103021121121193 and 103021121121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103021121121227) 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, 397000445 + ... + 397259858.

It is an arithmetic number, because the mean of its divisors is an integer number (25755478877808).

Almost surely, 2^{103021121121221} is an apocalyptic number.

It is an amenable number.

103021121121221 is a deficient number, since it is larger than the sum of its proper divisors (794390011).

103021121121221 is an equidigital number, since it uses as much as digits as its factorization.

103021121121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794390010.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 103021121121221 its reverse (122121121120301), we get a palindrome (225142242241522).

The spelling of 103021121121221 in words is "one hundred three trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".