221103031013221 has 16 divisors (see below), whose sum is σ = 259814605397760. Its totient is φ = 184207180417920.

The previous prime is 221103031013173. The next prime is 221103031013239. The reversal of 221103031013221 is 122310130301122.

It is a cyclic number.

It is not a de Polignac number, because 221103031013221 - 2²¹ = 221103028916069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221103031013192 and 221103031013201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221103031013321) 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, 1431881601 + ... + 1432036006.

It is an arithmetic number, because the mean of its divisors is an integer number (16238412837360).

Almost surely, 2^{221103031013221} is an apocalyptic number.

It is an amenable number.

221103031013221 is a deficient number, since it is larger than the sum of its proper divisors (38711574384539).

221103031013221 is a wasteful number, since it uses less digits than its factorization.

221103031013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863917924.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 221103031013221 its reverse (122310130301122), we get a palindrome (343413161314343).

The spelling of 221103031013221 in words is "two hundred twenty-one trillion, one hundred three billion, thirty-one million, thirteen thousand, two hundred twenty-one".