101201001111 has 24 divisors (see below), whose sum is σ = 167121905184. Its totient is φ = 57808396800.

The previous prime is 101201001061. The next prime is 101201001119. The reversal of 101201001111 is 111100102101.

It is not a de Polignac number, because 101201001111 - 2⁶ = 101201001047 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 = 101201001093 and 101201001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201001119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110286 + ... + 463211.

It is an arithmetic number, because the mean of its divisors is an integer number (6963412716).

Almost surely, 2^101201001111 is an apocalyptic number.

101201001111 is a deficient number, since it is larger than the sum of its proper divisors (65920904073).

101201001111 is a wasteful number, since it uses less digits than its factorization.

101201001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576311 (or 576308 counting only the distinct ones).

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

Adding to 101201001111 its reverse (111100102101), we get a palindrome (212301103212).

The spelling of 101201001111 in words is "one hundred one billion, two hundred one million, one thousand, one hundred eleven".