2120121100211 has 4 divisors (see below), whose sum is σ = 2120772046392. Its totient is φ = 2119470154032.

The previous prime is 2120121100199. The next prime is 2120121100241. The reversal of 2120121100211 is 1120011210212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120121100211 is a prime.

It is a super-2 number, since 2×2120121100211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120121100241) 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, 325468205 + ... + 325474718.

It is an arithmetic number, because the mean of its divisors is an integer number (530193011598).

Almost surely, 2^{2120121100211} is an apocalyptic number.

2120121100211 is a deficient number, since it is larger than the sum of its proper divisors (650946181).

2120121100211 is an equidigital number, since it uses as much as digits as its factorization.

2120121100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650946180.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2120121100211 its reverse (1120011210212), we get a palindrome (3240132310423).

The spelling of 2120121100211 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, one hundred thousand, two hundred eleven".