20002846221 has 12 divisors (see below), whose sum is σ = 30592588572. Its totient is φ = 12550805376.

The previous prime is 20002846207. The next prime is 20002846223. The reversal of 20002846221 is 12264820002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9194124996 + 10808721225 = 95886^2 + 103965^2 .

It is not a de Polignac number, because 20002846221 - 2⁷ = 20002846093 is a prime.

It is a super-2 number, since 2×20002846221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002846223) 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, 65368626 + ... + 65368931.

It is an arithmetic number, because the mean of its divisors is an integer number (2549382381).

Almost surely, 2^20002846221 is an apocalyptic number.

It is an amenable number.

20002846221 is a deficient number, since it is larger than the sum of its proper divisors (10589742351).

20002846221 is a wasteful number, since it uses less digits than its factorization.

20002846221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130737580 (or 130737577 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 20002846221 in words is "twenty billion, two million, eight hundred forty-six thousand, two hundred twenty-one".