2021121200011 has 4 divisors (see below), whose sum is σ = 2021184476992. Its totient is φ = 2021057923032.

The previous prime is 2021121199919. The next prime is 2021121200039. The reversal of 2021121200011 is 1100021211202.

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 2021121200011 - 2¹³ = 2021121191819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021121199964 and 2021121200000.

It is not an unprimeable number, because it can be changed into a prime (2021121200051) 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, 31590555 + ... + 31654468.

It is an arithmetic number, because the mean of its divisors is an integer number (505296119248).

Almost surely, 2^{2021121200011} is an apocalyptic number.

2021121200011 is a deficient number, since it is larger than the sum of its proper divisors (63276981).

2021121200011 is an equidigital number, since it uses as much as digits as its factorization.

2021121200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63276980.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021121200011 its reverse (1100021211202), we get a palindrome (3121142411213).

The spelling of 2021121200011 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two hundred thousand, eleven".