221211222101003 has 4 divisors (see below), whose sum is σ = 221277671855640. Its totient is φ = 221144772346368.

The previous prime is 221211222100901. The next prime is 221211222101011. The reversal of 221211222101003 is 300101222112122.

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 221211222101003 - 2²⁸ = 221210953665547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221211222101033) 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, 33224872325 + ... + 33224878982.

It is an arithmetic number, because the mean of its divisors is an integer number (55319417963910).

Almost surely, 2^{221211222101003} is an apocalyptic number.

221211222101003 is a deficient number, since it is larger than the sum of its proper divisors (66449754637).

221211222101003 is an equidigital number, since it uses as much as digits as its factorization.

221211222101003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66449754636.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221211222101003 its reverse (300101222112122), we get a palindrome (521312444213125).

The spelling of 221211222101003 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred one thousand, three".