220984629021 has 12 divisors (see below), whose sum is σ = 343753867548. Its totient is φ = 135990540864.

The previous prime is 220984629013. The next prime is 220984629071. The reversal of 220984629021 is 120926489022.

It can be written as a sum of positive squares in 2 ways, for example, as 45183879225 + 175800749796 = 212565^2 + 419286^2 .

It is not a de Polignac number, because 220984629021 - 2³ = 220984629013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220984629071) 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, 944378640 + ... + 944378873.

It is an arithmetic number, because the mean of its divisors is an integer number (28646155629).

Almost surely, 2^220984629021 is an apocalyptic number.

It is an amenable number.

220984629021 is a deficient number, since it is larger than the sum of its proper divisors (122769238527).

220984629021 is a wasteful number, since it uses less digits than its factorization.

220984629021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888757532 (or 1888757529 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 220984629021 in words is "two hundred twenty billion, nine hundred eighty-four million, six hundred twenty-nine thousand, twenty-one".