221103210203131 has 4 divisors (see below), whose sum is σ = 221103344286000. Its totient is φ = 221103076120264.

The previous prime is 221103210202997. The next prime is 221103210203143. The reversal of 221103210203131 is 131302012301122.

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 221103210203131 - 2⁹ = 221103210202619 is a prime.

It is a super-2 number, since 2×221103210203131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221103210203231) 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, 64536736 + ... + 67876333.

It is an arithmetic number, because the mean of its divisors is an integer number (55275836071500).

Almost surely, 2^{221103210203131} is an apocalyptic number.

221103210203131 is a deficient number, since it is larger than the sum of its proper divisors (134082869).

221103210203131 is a wasteful number, since it uses less digits than its factorization.

221103210203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134082868.

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

Adding to 221103210203131 its reverse (131302012301122), we get a palindrome (352405222504253).

The spelling of 221103210203131 in words is "two hundred twenty-one trillion, one hundred three billion, two hundred ten million, two hundred three thousand, one hundred thirty-one".