1220221101003 has 4 divisors (see below), whose sum is σ = 1626961468008. Its totient is φ = 813480734000.

The previous prime is 1220221100951. The next prime is 1220221101019. The reversal of 1220221101003 is 3001011220221.

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 1220221101003 - 2¹² = 1220221096907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220221101053) 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, 203370183498 + ... + 203370183503.

It is an arithmetic number, because the mean of its divisors is an integer number (406740367002).

Almost surely, 2^{1220221101003} is an apocalyptic number.

1220221101003 is a deficient number, since it is larger than the sum of its proper divisors (406740367005).

1220221101003 is an equidigital number, since it uses as much as digits as its factorization.

1220221101003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406740367004.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1220221101003 its reverse (3001011220221), we get a palindrome (4221232321224).

The spelling of 1220221101003 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred one thousand, three".