10012020111 has 12 divisors (see below), whose sum is σ = 14798128488. Its totient is φ = 6519454704.

The previous prime is 10012020107. The next prime is 10012020131. The reversal of 10012020111 is 11102021001.

It is a happy number.

10012020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10012020111 - 2² = 10012020107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10012020093 and 10012020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12935040 + ... + 12935813.

It is an arithmetic number, because the mean of its divisors is an integer number (1233177374).

Almost surely, 2^10012020111 is an apocalyptic number.

10012020111 is a deficient number, since it is larger than the sum of its proper divisors (4786108377).

10012020111 is a wasteful number, since it uses less digits than its factorization.

10012020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25870902 (or 25870899 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10012020111 its reverse (11102021001), we get a palindrome (21114041112).

The spelling of 10012020111 in words is "ten billion, twelve million, twenty thousand, one hundred eleven".