200221020021 has 32 divisors (see below), whose sum is σ = 293526604800. Its totient is φ = 120392870400.

The previous prime is 200221020001. The next prime is 200221020029. The reversal of 200221020021 is 120020122002.

It is not a de Polignac number, because 200221020021 - 2⁷ = 200221019893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221019979 and 200221020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221020029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2274966 + ... + 2361336.

It is an arithmetic number, because the mean of its divisors is an integer number (9172706400).

Almost surely, 2^200221020021 is an apocalyptic number.

It is an amenable number.

200221020021 is a deficient number, since it is larger than the sum of its proper divisors (93305584779).

200221020021 is a wasteful number, since it uses less digits than its factorization.

200221020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86937.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200221020021 its reverse (120020122002), we get a palindrome (320241142023).

The spelling of 200221020021 in words is "two hundred billion, two hundred twenty-one million, twenty thousand, twenty-one".