10002020221001 has 4 divisors (see below), whose sum is σ = 10003074073104. Its totient is φ = 10000966368900.

The previous prime is 10002020220991. The next prime is 10002020221003. The reversal of 10002020221001 is 10012202020001.

It is a happy number.

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 10002020221001 - 2¹⁰ = 10002020219977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10002020221003) 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, 526911815 + ... + 526930796.

It is an arithmetic number, because the mean of its divisors is an integer number (2500768518276).

Almost surely, 2^{10002020221001} is an apocalyptic number.

It is an amenable number.

10002020221001 is a deficient number, since it is larger than the sum of its proper divisors (1053852103).

10002020221001 is an equidigital number, since it uses as much as digits as its factorization.

10002020221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053852102.

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

Adding to 10002020221001 its reverse (10012202020001), we get a palindrome (20014222241002).

The spelling of 10002020221001 in words is "ten trillion, two billion, twenty million, two hundred twenty-one thousand, one".