2021200201221 has 32 divisors (see below), whose sum is σ = 2932923310080. Its totient is φ = 1233410068800.

The previous prime is 2021200201171. The next prime is 2021200201277. The reversal of 2021200201221 is 1221020021202.

It is not a de Polignac number, because 2021200201221 - 2¹¹ = 2021200199173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021200201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021200201291) 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, 208591 + ... + 2021363.

It is an arithmetic number, because the mean of its divisors is an integer number (91653853440).

Almost surely, 2^{2021200201221} is an apocalyptic number.

It is an amenable number.

2021200201221 is a deficient number, since it is larger than the sum of its proper divisors (911723108859).

2021200201221 is a wasteful number, since it uses less digits than its factorization.

2021200201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813457.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021200201221 its reverse (1221020021202), we get a palindrome (3242220222423).

The spelling of 2021200201221 in words is "two trillion, twenty-one billion, two hundred million, two hundred one thousand, two hundred twenty-one".