220021021205 has 16 divisors (see below), whose sum is σ = 271445807424. Its totient is φ = 171108564480.

The previous prime is 220021021169. The next prime is 220021021223. The reversal of 220021021205 is 502120120022.

It is not a de Polignac number, because 220021021205 - 2¹⁸ = 220020759061 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 2379644 + ... + 2470373.

It is an arithmetic number, because the mean of its divisors is an integer number (16965362964).

Almost surely, 2^220021021205 is an apocalyptic number.

It is an amenable number.

220021021205 is a deficient number, since it is larger than the sum of its proper divisors (51424786219).

220021021205 is a wasteful number, since it uses less digits than its factorization.

220021021205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850276.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 220021021205 its reverse (502120120022), we get a palindrome (722141141227).

The spelling of 220021021205 in words is "two hundred twenty billion, twenty-one million, twenty-one thousand, two hundred five".