10011111222021 has 96 divisors (see below), whose sum is σ = 17897207454720. Its totient is φ = 4854381622272.

The previous prime is 10011111222011. The next prime is 10011111222023. The reversal of 10011111222021 is 12022211111001.

It is a happy number.

It is not a de Polignac number, because 10011111222021 - 2¹⁰ = 10011111220997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011111222023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 664890 + ... + 4523748.

It is an arithmetic number, because the mean of its divisors is an integer number (186429244320).

Almost surely, 2^{10011111222021} is an apocalyptic number.

It is an amenable number.

10011111222021 is a deficient number, since it is larger than the sum of its proper divisors (7886096232699).

10011111222021 is a wasteful number, since it uses less digits than its factorization.

10011111222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858955 (or 3858942 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10011111222021 its reverse (12022211111001), we get a palindrome (22033322333022).

The spelling of 10011111222021 in words is "ten trillion, eleven billion, one hundred eleven million, two hundred twenty-two thousand, twenty-one".