221020122032 has 20 divisors (see below), whose sum is σ = 428328164856. Its totient is φ = 110483821440.

The previous prime is 221020122031. The next prime is 221020122053. The reversal of 221020122032 is 230221020122.

It is a self number, because there is not a number n which added to its sum of digits gives 221020122032.

It is not an unprimeable number, because it can be changed into a prime (221020122031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570394 + ... + 1705337.

Almost surely, 2^221020122032 is an apocalyptic number.

It is an amenable number.

221020122032 is a deficient number, since it is larger than the sum of its proper divisors (207308042824).

221020122032 is a wasteful number, since it uses less digits than its factorization.

221020122032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279956 (or 3279950 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221020122032 its reverse (230221020122), we get a palindrome (451241142154).

The spelling of 221020122032 in words is "two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, thirty-two".