221220101022 has 8 divisors (see below), whose sum is σ = 442440202056. Its totient is φ = 73740033672.

The previous prime is 221220100967. The next prime is 221220101027. The reversal of 221220101022 is 220101022122.

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

221220101022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221220100992 and 221220101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220101027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18435008413 + ... + 18435008424.

It is an arithmetic number, because the mean of its divisors is an integer number (55305025257).

Almost surely, 2^221220101022 is an apocalyptic number.

221220101022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221220101022 is a wasteful number, since it uses less digits than its factorization.

221220101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36870016842.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221220101022 its reverse (220101022122), we get a palindrome (441321123144).

The spelling of 221220101022 in words is "two hundred twenty-one billion, two hundred twenty million, one hundred one thousand, twenty-two".