221101022 has 4 divisors (see below), whose sum is σ = 331651536. Its totient is φ = 110550510.

The previous prime is 221101007. The next prime is 221101039. The reversal of 221101022 is 220101122.

It is a happy number.

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 = 221100994 and 221101012.

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, 55275254 + ... + 55275257.

It is an arithmetic number, because the mean of its divisors is an integer number (82912884).

Almost surely, 2^221101022 is an apocalyptic number.

221101022 is a deficient number, since it is larger than the sum of its proper divisors (110550514).

221101022 is a wasteful number, since it uses less digits than its factorization.

221101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110550513.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 221101022 is about 14869.4660966694. The cubic root of 221101022 is about 604.6864682398.

Adding to 221101022 its reverse (220101122), we get a palindrome (441202144).

It can be divided in two parts, 22110 and 1022, that added together give a palindrome (23132).

The spelling of 221101022 in words is "two hundred twenty-one million, one hundred one thousand, twenty-two".