101200020111 has 16 divisors (see below), whose sum is σ = 150147439200. Its totient is φ = 67367012544.

The previous prime is 101200020109. The next prime is 101200020241. The reversal of 101200020111 is 111020002101.

It is a happy number.

It is not a de Polignac number, because 101200020111 - 2¹ = 101200020109 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 = 101200020093 and 101200020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200020611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2749926 + ... + 2786483.

It is an arithmetic number, because the mean of its divisors is an integer number (9384214950).

Almost surely, 2^101200020111 is an apocalyptic number.

101200020111 is a deficient number, since it is larger than the sum of its proper divisors (48947419089).

101200020111 is an equidigital number, since it uses as much as digits as its factorization.

101200020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537095 (or 5537089 counting only the distinct ones).

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

Adding to 101200020111 its reverse (111020002101), we get a palindrome (212220022212).

The spelling of 101200020111 in words is "one hundred one billion, two hundred million, twenty thousand, one hundred eleven".