2120100001 has 4 divisors (see below), whose sum is σ = 2123640000. Its totient is φ = 2116560004.

The previous prime is 2120099999. The next prime is 2120100023. The reversal of 2120100001 is 1000010212.

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 2120100001 - 2¹ = 2120099999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120100401) 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, 1769101 + ... + 1770298.

It is an arithmetic number, because the mean of its divisors is an integer number (530910000).

Almost surely, 2^2120100001 is an apocalyptic number.

It is an amenable number.

2120100001 is a deficient number, since it is larger than the sum of its proper divisors (3539999).

2120100001 is an equidigital number, since it uses as much as digits as its factorization.

2120100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539998.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2120100001 is about 46044.5436615458. The cubic root of 2120100001 is about 1284.6518562078.

Adding to 2120100001 its reverse (1000010212), we get a palindrome (3120110213).

The spelling of 2120100001 in words is "two billion, one hundred twenty million, one hundred thousand, one".