1220050500221 has 12 divisors (see below), whose sum is σ = 1427524142112. Its totient is φ = 1021437617256.

The previous prime is 1220050500217. The next prime is 1220050500233.

It is a happy number.

1220050500221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1220050500221 - 2² = 1220050500217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220050500193 and 1220050500202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220050508221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47118731 + ... + 47144616.

It is an arithmetic number, because the mean of its divisors is an integer number (118960345176).

Almost surely, 2^{1220050500221} is an apocalyptic number.

It is an amenable number.

1220050500221 is a deficient number, since it is larger than the sum of its proper divisors (207473641891).

1220050500221 is an frugal number, since it uses more digits than its factorization.

1220050500221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94263440 (or 94263397 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

It can be divided in two parts, 1220050 and 500221, that added together give a palindrome (1720271).

The spelling of 1220050500221 in words is "one trillion, two hundred twenty billion, fifty million, five hundred thousand, two hundred twenty-one".