1000021220201 has 8 divisors (see below), whose sum is σ = 1043512224000. Its totient is φ = 956531201472.

The previous prime is 1000021220189. The next prime is 1000021220227. The reversal of 1000021220201 is 1020221200001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000021220201 - 2²² = 1000017025897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000021220281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2462096 + ... + 2839358.

It is an arithmetic number, because the mean of its divisors is an integer number (130439028000).

Almost surely, 2^{1000021220201} is an apocalyptic number.

It is an amenable number.

1000021220201 is a deficient number, since it is larger than the sum of its proper divisors (43491003799).

1000021220201 is a wasteful number, since it uses less digits than its factorization.

1000021220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492535.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000021220201 its reverse (1020221200001), we get a palindrome (2020242420202).

The spelling of 1000021220201 in words is "one trillion, twenty-one million, two hundred twenty thousand, two hundred one".