20212120001 has 8 divisors (see below), whose sum is σ = 20867136000. Its totient is φ = 19557292320.

The previous prime is 20212119887. The next prime is 20212120031. The reversal of 20212120001 is 10002121202.

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 a de Polignac number, because none of the positive numbers 2^k-20212120001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212120031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190100 + ... + 276698.

It is an arithmetic number, because the mean of its divisors is an integer number (2608392000).

Almost surely, 2^20212120001 is an apocalyptic number.

It is an amenable number.

20212120001 is a deficient number, since it is larger than the sum of its proper divisors (655015999).

20212120001 is an equidigital number, since it uses as much as digits as its factorization.

20212120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94159.

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

Adding to 20212120001 its reverse (10002121202), we get a palindrome (30214241203).

The spelling of 20212120001 in words is "twenty billion, two hundred twelve million, one hundred twenty thousand, one".