7421221103 has 4 divisors (see below), whose sum is σ = 7422491880. Its totient is φ = 7419950328.

The previous prime is 7421221069. The next prime is 7421221127. The reversal of 7421221103 is 3011221247.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7421221103 is a prime.

It is a super-2 number, since 2×7421221103² (a number of 21 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 (7421221163) 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, 626588 + ... + 638321.

It is an arithmetic number, because the mean of its divisors is an integer number (1855622970).

Almost surely, 2^7421221103 is an apocalyptic number.

7421221103 is a deficient number, since it is larger than the sum of its proper divisors (1270777).

7421221103 is a wasteful number, since it uses less digits than its factorization.

7421221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270776.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 7421221103 is about 86146.5095230213. The cubic root of 7421221103 is about 1950.5561510760.

The spelling of 7421221103 in words is "seven billion, four hundred twenty-one million, two hundred twenty-one thousand, one hundred three".