11221420443403 has 4 divisors (see below), whose sum is σ = 11303328621960. Its totient is φ = 11139512264848.

The previous prime is 11221420443323. The next prime is 11221420443463. The reversal of 11221420443403 is 30434402412211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11221420443403 - 2²⁹ = 11220883572491 is a prime.

It is a super-2 number, since 2×11221420443403² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221420443463) 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, 40954089073 + ... + 40954089346.

It is an arithmetic number, because the mean of its divisors is an integer number (2825832155490).

Almost surely, 2^{11221420443403} is an apocalyptic number.

11221420443403 is a deficient number, since it is larger than the sum of its proper divisors (81908178557).

11221420443403 is an equidigital number, since it uses as much as digits as its factorization.

11221420443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81908178556.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 11221420443403 its reverse (30434402412211), we get a palindrome (41655822855614).

The spelling of 11221420443403 in words is "eleven trillion, two hundred twenty-one billion, four hundred twenty million, four hundred forty-three thousand, four hundred three".