221020220001122 has 8 divisors (see below), whose sum is σ = 331531007787372. Its totient is φ = 110509884072000.

The previous prime is 221020220001103. The next prime is 221020220001131. The reversal of 221020220001122 is 221100022020122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 175017791666041 + 46002428335081 = 13229429^2 + 6782509^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221020220001122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111738779 + ... + 113699582.

Almost surely, 2^{221020220001122} is an apocalyptic number.

221020220001122 is a deficient number, since it is larger than the sum of its proper divisors (110510787786250).

221020220001122 is a wasteful number, since it uses less digits than its factorization.

221020220001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225928564.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221020220001122 its reverse (221100022020122), we get a palindrome (442120242021244).

The spelling of 221020220001122 in words is "two hundred twenty-one trillion, twenty billion, two hundred twenty million, one thousand, one hundred twenty-two".