2021011121011 has 8 divisors (see below), whose sum is σ = 2179267448400. Its totient is φ = 1867943525760.

The previous prime is 2021011120991. The next prime is 2021011121083. The reversal of 2021011121011 is 1101211101202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021011121011 - 2³⁷ = 1883572167539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021011120982 and 2021011121000.

It is not an unprimeable number, because it can be changed into a prime (2021011121611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297182226 + ... + 1297183783.

It is an arithmetic number, because the mean of its divisors is an integer number (272408431050).

Almost surely, 2^{2021011121011} is an apocalyptic number.

2021011121011 is a deficient number, since it is larger than the sum of its proper divisors (158256327389).

2021011121011 is a wasteful number, since it uses less digits than its factorization.

2021011121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594366069.

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

Adding to 2021011121011 its reverse (1101211101202), we get a palindrome (3122222222213).

The spelling of 2021011121011 in words is "two trillion, twenty-one billion, eleven million, one hundred twenty-one thousand, eleven".