1011100221211 has 8 divisors (see below), whose sum is σ = 1011665268000. Its totient is φ = 1010535332352.

The previous prime is 1011100221203. The next prime is 1011100221233. The reversal of 1011100221211 is 1121220011101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011100221211 - 2³ = 1011100221203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011100221191 and 1011100221200.

It is not an unprimeable number, because it can be changed into a prime (1011100221811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14158651 + ... + 14229883.

It is an arithmetic number, because the mean of its divisors is an integer number (126458158500).

Almost surely, 2^{1011100221211} is an apocalyptic number.

1011100221211 is a deficient number, since it is larger than the sum of its proper divisors (565046789).

1011100221211 is an equidigital number, since it uses as much as digits as its factorization.

1011100221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78965.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011100221211 its reverse (1121220011101), we get a palindrome (2132320232312).

The spelling of 1011100221211 in words is "one trillion, eleven billion, one hundred million, two hundred twenty-one thousand, two hundred eleven".