20200222021221 has 48 divisors (see below), whose sum is σ = 33093682509888. Its totient is φ = 11765691590400.

The previous prime is 20200222021171. The next prime is 20200222021237. The reversal of 20200222021221 is 12212022200202.

20200222021221 is a `hidden beast` number, since 2 + 0 + 200 + 2 + 220 + 21 + 221 = 666.

It is not a de Polignac number, because 20200222021221 - 2⁹ = 20200222020709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200222021194 and 20200222021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200222021241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36867226 + ... + 37411131.

It is an arithmetic number, because the mean of its divisors is an integer number (689451718956).

Almost surely, 2^{20200222021221} is an apocalyptic number.

It is an amenable number.

20200222021221 is a deficient number, since it is larger than the sum of its proper divisors (12893460488667).

20200222021221 is a wasteful number, since it uses less digits than its factorization.

20200222021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74278482 (or 74278479 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20200222021221 its reverse (12212022200202), we get a palindrome (32412244221423).

The spelling of 20200222021221 in words is "twenty trillion, two hundred billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-one".