221002131022 has 4 divisors (see below), whose sum is σ = 331503196536. Its totient is φ = 110501065510.

The previous prime is 221002131019. The next prime is 221002131073. The reversal of 221002131022 is 220131200122.

It is a happy number.

221002131022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 221002130987 and 221002131005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250532754 + ... + 55250532757.

It is an arithmetic number, because the mean of its divisors is an integer number (82875799134).

Almost surely, 2^221002131022 is an apocalyptic number.

221002131022 is a deficient number, since it is larger than the sum of its proper divisors (110501065514).

221002131022 is a wasteful number, since it uses less digits than its factorization.

221002131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110501065513.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221002131022 its reverse (220131200122), we get a palindrome (441133331144).

The spelling of 221002131022 in words is "two hundred twenty-one billion, two million, one hundred thirty-one thousand, twenty-two".