10101120111 has 12 divisors (see below), whose sum is σ = 14596327200. Its totient is φ = 6731393760.

The previous prime is 10101120101. The next prime is 10101120137. The reversal of 10101120111 is 11102110101.

It is not a de Polignac number, because 10101120111 - 2⁵ = 10101120079 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 = 10101120093 and 10101120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101120101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199911 + ... + 245288.

It is an arithmetic number, because the mean of its divisors is an integer number (1216360600).

Almost surely, 2^10101120111 is an apocalyptic number.

10101120111 is a deficient number, since it is larger than the sum of its proper divisors (4495207089).

10101120111 is a wasteful number, since it uses less digits than its factorization.

10101120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447726 (or 447723 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10101120111 its reverse (11102110101), we get a palindrome (21203230212).

The spelling of 10101120111 in words is "ten billion, one hundred one million, one hundred twenty thousand, one hundred eleven".