11012100221121 has 16 divisors (see below), whose sum is σ = 15156843886080. Its totient is φ = 7104391004160.

The previous prime is 11012100221117. The next prime is 11012100221149. The reversal of 11012100221121 is 12112200121011.

It is a happy number.

It is not a de Polignac number, because 11012100221121 - 2² = 11012100221117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11012100221121.

It is not an unprimeable number, because it can be changed into a prime (11012100228121) 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, 1961091 + ... + 5086263.

It is an arithmetic number, because the mean of its divisors is an integer number (947302742880).

Almost surely, 2^{11012100221121} is an apocalyptic number.

It is an amenable number.

11012100221121 is a deficient number, since it is larger than the sum of its proper divisors (4144743664959).

11012100221121 is a wasteful number, since it uses less digits than its factorization.

11012100221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163096.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11012100221121 its reverse (12112200121011), we get a palindrome (23124300342132).

The spelling of 11012100221121 in words is "eleven trillion, twelve billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-one".