200221011220021 has 32 divisors (see below), whose sum is σ = 219812783688576. Its totient is φ = 180864762624000.

The previous prime is 200221011220007. The next prime is 200221011220049. The reversal of 200221011220021 is 120022110122002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 200221011220021 - 2⁷ = 200221011219893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200221011219977 and 200221011220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221011220621) 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, 7624259031 + ... + 7624285291.

It is an arithmetic number, because the mean of its divisors is an integer number (6869149490268).

Almost surely, 2^{200221011220021} is an apocalyptic number.

It is an amenable number.

200221011220021 is a deficient number, since it is larger than the sum of its proper divisors (19591772468555).

200221011220021 is a wasteful number, since it uses less digits than its factorization.

200221011220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33493.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200221011220021 its reverse (120022110122002), we get a palindrome (320243121342023).

It can be divided in two parts, 2002210 and 11220021, that added together give a palindrome (13222231).

The spelling of 200221011220021 in words is "two hundred trillion, two hundred twenty-one billion, eleven million, two hundred twenty thousand, twenty-one".