221011121211003 has 16 divisors (see below), whose sum is σ = 338714362010400. Its totient is φ = 142260032043360.

The previous prime is 221011121210969. The next prime is 221011121211043. The reversal of 221011121211003 is 300112121110122.

It is a happy number.

It is not a de Polignac number, because 221011121211003 - 2⁴⁰ = 219911609583227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221011121211043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141130983388 + ... + 141130984953.

It is an arithmetic number, because the mean of its divisors is an integer number (21169647625650).

Almost surely, 2^{221011121211003} is an apocalyptic number.

221011121211003 is a deficient number, since it is larger than the sum of its proper divisors (117703240799397).

221011121211003 is a wasteful number, since it uses less digits than its factorization.

221011121211003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282261968379 (or 282261968373 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 221011121211003 its reverse (300112121110122), we get a palindrome (521123242321125).

The spelling of 221011121211003 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-one million, two hundred eleven thousand, three".