221020233122 has 16 divisors (see below), whose sum is σ = 357182609280. Its totient is φ = 101966502672.

The previous prime is 221020233107. The next prime is 221020233127. The reversal of 221020233122 is 221332020122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221020233094 and 221020233103.

It is not an unprimeable number, because it can be changed into a prime (221020233127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1721672 + ... + 1845587.

It is an arithmetic number, because the mean of its divisors is an integer number (22323913080).

Almost surely, 2^221020233122 is an apocalyptic number.

221020233122 is a deficient number, since it is larger than the sum of its proper divisors (136162376158).

221020233122 is a wasteful number, since it uses less digits than its factorization.

221020233122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569657.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 221020233122 its reverse (221332020122), we get a palindrome (442352253244).

The spelling of 221020233122 in words is "two hundred twenty-one billion, twenty million, two hundred thirty-three thousand, one hundred twenty-two".