11122121101 has 16 divisors (see below), whose sum is σ = 13691801088. Its totient is φ = 8797968000.

The previous prime is 11122121083. The next prime is 11122121107. The reversal of 11122121101 is 10112122111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11122121101 - 2¹⁷ = 11121990029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122121107) 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, 509001 + ... + 530401.

It is an arithmetic number, because the mean of its divisors is an integer number (855737568).

Almost surely, 2^11122121101 is an apocalyptic number.

It is an amenable number.

11122121101 is a deficient number, since it is larger than the sum of its proper divisors (2569679987).

11122121101 is a wasteful number, since it uses less digits than its factorization.

11122121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27132.

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

Adding to 11122121101 its reverse (10112122111), we get a palindrome (21234243212).

The spelling of 11122121101 in words is "eleven billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred one".