2101010121211 has 4 divisors (see below), whose sum is σ = 2101030594624. Its totient is φ = 2100989647800.

The previous prime is 2101010121191. The next prime is 2101010121233. The reversal of 2101010121211 is 1121210101012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2101010121211 - 2¹³ = 2101010113019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101010121191 and 2101010121200.

It is not an unprimeable number, because it can be changed into a prime (2101010121011) 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, 10081995 + ... + 10288276.

It is an arithmetic number, because the mean of its divisors is an integer number (525257648656).

Almost surely, 2^{2101010121211} is an apocalyptic number.

2101010121211 is a deficient number, since it is larger than the sum of its proper divisors (20473413).

2101010121211 is a wasteful number, since it uses less digits than its factorization.

2101010121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20473412.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2101010121211 its reverse (1121210101012), we get a palindrome (3222220222223).

The spelling of 2101010121211 in words is "two trillion, one hundred one billion, ten million, one hundred twenty-one thousand, two hundred eleven".