10111122021 has 48 divisors (see below), whose sum is σ = 18424300608. Its totient is φ = 4848480000.

The previous prime is 10111122017. The next prime is 10111122031. The reversal of 10111122021 is 12022111101.

It is not a de Polignac number, because 10111122021 - 2² = 10111122017 is a prime.

It is a super-2 number, since 2×10111122021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10111121988 and 10111122006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111122031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219480 + ... + 261521.

It is an arithmetic number, because the mean of its divisors is an integer number (383839596).

Almost surely, 2^10111122021 is an apocalyptic number.

10111122021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10111122021 is a deficient number, since it is larger than the sum of its proper divisors (8313178587).

10111122021 is a wasteful number, since it uses less digits than its factorization.

10111122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481042 (or 481035 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10111122021 its reverse (12022111101), we get a palindrome (22133233122).

The spelling of 10111122021 in words is "ten billion, one hundred eleven million, one hundred twenty-two thousand, twenty-one".