221020302122232 has 64 divisors (see below), whose sum is σ = 571523016879360. Its totient is φ = 71178690681600.

The previous prime is 221020302122219. The next prime is 221020302122309. The reversal of 221020302122232 is 232221203020122.

It is a super-2 number, since 2×221020302122232² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090258494 + ... + 1090461197.

It is an arithmetic number, because the mean of its divisors is an integer number (8930047138740).

Almost surely, 2^{221020302122232} is an apocalyptic number.

It is an amenable number.

221020302122232 is an abundant number, since it is smaller than the sum of its proper divisors (350502714757128).

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

221020302122232 is a wasteful number, since it uses less digits than its factorization.

221020302122232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180719844 (or 2180719840 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221020302122232 its reverse (232221203020122), we get a palindrome (453241505142354).

The spelling of 221020302122232 in words is "two hundred twenty-one trillion, twenty billion, three hundred two million, one hundred twenty-two thousand, two hundred thirty-two".