20212002210001 has 4 divisors (see below), whose sum is σ = 23099431097152. Its totient is φ = 17324573322852.

The previous prime is 20212002209999. The next prime is 20212002210013. The reversal of 20212002210001 is 10001220021202.

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 20212002210001 - 2¹ = 20212002209999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212002210401) 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, 1443714443565 + ... + 1443714443578.

It is an arithmetic number, because the mean of its divisors is an integer number (5774857774288).

Almost surely, 2^{20212002210001} is an apocalyptic number.

It is an amenable number.

20212002210001 is a deficient number, since it is larger than the sum of its proper divisors (2887428887151).

20212002210001 is an equidigital number, since it uses as much as digits as its factorization.

20212002210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887428887150.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20212002210001 its reverse (10001220021202), we get a palindrome (30213222231203).

The spelling of 20212002210001 in words is "twenty trillion, two hundred twelve billion, two million, two hundred ten thousand, one".