221020000022 has 4 divisors (see below), whose sum is σ = 331530000036. Its totient is φ = 110510000010.

The previous prime is 221020000013. The next prime is 221020000027. The reversal of 221020000022 is 220000020122.

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 = 221019999958 and 221020000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020000027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55255000004 + ... + 55255000007.

It is an arithmetic number, because the mean of its divisors is an integer number (82882500009).

Almost surely, 2^221020000022 is an apocalyptic number.

221020000022 is a deficient number, since it is larger than the sum of its proper divisors (110510000014).

221020000022 is a wasteful number, since it uses less digits than its factorization.

221020000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110510000013.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 221020000022 its reverse (220000020122), we get a palindrome (441020020144).

The spelling of 221020000022 in words is "two hundred twenty-one billion, twenty million, twenty-two", and thus it is an aban number.