2021120001011 has 4 divisors (see below), whose sum is σ = 2064122554272. Its totient is φ = 1978117447752.

The previous prime is 2021120000989. The next prime is 2021120001013. The reversal of 2021120001011 is 1101000211202.

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 2021120001011 - 2²² = 2021115806707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021120000983 and 2021120001001.

It is not an unprimeable number, because it can be changed into a prime (2021120001013) 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, 21501276560 + ... + 21501276653.

It is an arithmetic number, because the mean of its divisors is an integer number (516030638568).

Almost surely, 2^{2021120001011} is an apocalyptic number.

2021120001011 is a deficient number, since it is larger than the sum of its proper divisors (43002553261).

2021120001011 is an equidigital number, since it uses as much as digits as its factorization.

2021120001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43002553260.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021120001011 its reverse (1101000211202), we get a palindrome (3122120212213).

The spelling of 2021120001011 in words is "two trillion, twenty-one billion, one hundred twenty million, one thousand, eleven".