1200011222101 has 4 divisors (see below), whose sum is σ = 1200014743104. Its totient is φ = 1200007701100.

The previous prime is 1200011222093. The next prime is 1200011222117. The reversal of 1200011222101 is 1012221100021.

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 1200011222101 - 2³ = 1200011222093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200011222131) 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, 1187005 + ... + 1951666.

It is an arithmetic number, because the mean of its divisors is an integer number (300003685776).

Almost surely, 2^{1200011222101} is an apocalyptic number.

It is an amenable number.

1200011222101 is a deficient number, since it is larger than the sum of its proper divisors (3521003).

1200011222101 is an equidigital number, since it uses as much as digits as its factorization.

1200011222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521002.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200011222101 its reverse (1012221100021), we get a palindrome (2212232322122).

The spelling of 1200011222101 in words is "one trillion, two hundred billion, eleven million, two hundred twenty-two thousand, one hundred one".