11420121108 has 24 divisors (see below), whose sum is σ = 29069399520. Its totient is φ = 3460642720.

The previous prime is 11420121101. The next prime is 11420121109. The reversal of 11420121108 is 80112102411.

It is a super-2 number, since 2×11420121108² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43257903 + ... + 43258166.

It is an arithmetic number, because the mean of its divisors is an integer number (1211224980).

Almost surely, 2^11420121108 is an apocalyptic number.

It is an amenable number.

11420121108 is an abundant number, since it is smaller than the sum of its proper divisors (17649278412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11420121108 is a wasteful number, since it uses less digits than its factorization.

11420121108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86516087 (or 86516085 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 11420121108 its reverse (80112102411), we get a palindrome (91532223519).

The spelling of 11420121108 in words is "eleven billion, four hundred twenty million, one hundred twenty-one thousand, one hundred eight".