221211234422131 has 8 divisors (see below), whose sum is σ = 234348446190240. Its totient is φ = 208087887788928.

The previous prime is 221211234422119. The next prime is 221211234422147. The reversal of 221211234422131 is 131224432112122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221211234422131 - 2³⁵ = 221176874683763 is a prime.

It is a super-2 number, since 2×221211234422131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221211234422093 and 221211234422102.

It is not an unprimeable number, because it can be changed into a prime (221211234422831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466250871 + ... + 3466314688.

It is an arithmetic number, because the mean of its divisors is an integer number (29293555773780).

Almost surely, 2^{221211234422131} is an apocalyptic number.

221211234422131 is a deficient number, since it is larger than the sum of its proper divisors (13137211768109).

221211234422131 is a wasteful number, since it uses less digits than its factorization.

221211234422131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932567453.

The product of its digits is 9216, while the sum is 31.

Adding to 221211234422131 its reverse (131224432112122), we get a palindrome (352435666534253).

The spelling of 221211234422131 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred thirty-four million, four hundred twenty-two thousand, one hundred thirty-one".