101200111001 has 4 divisors (see below), whose sum is σ = 110400121104. Its totient is φ = 92000100900.

The previous prime is 101200110967. The next prime is 101200111013. The reversal of 101200111001 is 100111002101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101200111001 - 2¹⁴ = 101200094617 is a prime.

It is a super-2 number, since 2×101200111001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101200111001.

It is not an unprimeable number, because it can be changed into a prime (101200111081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600005035 + ... + 4600005056.

It is an arithmetic number, because the mean of its divisors is an integer number (27600030276).

Almost surely, 2^101200111001 is an apocalyptic number.

101200111001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101200111001 is a deficient number, since it is larger than the sum of its proper divisors (9200010103).

101200111001 is an equidigital number, since it uses as much as digits as its factorization.

101200111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9200010102.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 101200111001 its reverse (100111002101), we get a palindrome (201311113102).

The spelling of 101200111001 in words is "one hundred one billion, two hundred million, one hundred eleven thousand, one".