1000200020221 has 4 divisors (see below), whose sum is σ = 1000372266432. Its totient is φ = 1000027774012.

The previous prime is 1000200020207. The next prime is 1000200020227. The reversal of 1000200020221 is 1220200020001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000200020221 - 2⁵ = 1000200020189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000200020198 and 1000200020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000200020227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86114395 + ... + 86126008.

It is an arithmetic number, because the mean of its divisors is an integer number (250093066608).

Almost surely, 2^{1000200020221} is an apocalyptic number.

It is an amenable number.

1000200020221 is a deficient number, since it is larger than the sum of its proper divisors (172246211).

1000200020221 is an equidigital number, since it uses as much as digits as its factorization.

1000200020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172246210.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1000200020221 its reverse (1220200020001), we get a palindrome (2220400040222).

The spelling of 1000200020221 in words is "one trillion, two hundred million, twenty thousand, two hundred twenty-one".