221011121012103 has 12 divisors (see below), whose sum is σ = 319498040426760. Its totient is φ = 147220860639696.

The previous prime is 221011121012089. The next prime is 221011121012177. The reversal of 221011121012103 is 301210121110122.

It is a happy number.

221011121012103 is a `hidden beast` number, since 221 + 0 + 111 + 210 + 121 + 0 + 3 = 666.

221011121012103 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221011121012103 - 2²⁴ = 221011104234887 is a prime.

It is a super-2 number, since 2×221011121012103² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011121012203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9990546801 + ... + 9990568922.

It is an arithmetic number, because the mean of its divisors is an integer number (26624836702230).

Almost surely, 2^{221011121012103} is an apocalyptic number.

221011121012103 is a deficient number, since it is larger than the sum of its proper divisors (98486919414657).

221011121012103 is a wasteful number, since it uses less digits than its factorization.

221011121012103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19981116958 (or 19981116955 counting only the distinct ones).

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

Adding to 221011121012103 its reverse (301210121110122), we get a palindrome (522221242122225).

The spelling of 221011121012103 in words is "two hundred twenty-one trillion, eleven billion, one hundred twenty-one million, twelve thousand, one hundred three".