11012001121 has 8 divisors (see below), whose sum is σ = 12015057600. Its totient is φ = 10009272240.

The previous prime is 11012001079. The next prime is 11012001127. The reversal of 11012001121 is 12110021011.

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

It is not a de Polignac number, because 11012001121 - 2¹¹ = 11011999073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012001098 and 11012001107.

It is not an unprimeable number, because it can be changed into a prime (11012001127) 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, 8766 + ... + 148663.

It is an arithmetic number, because the mean of its divisors is an integer number (1501882200).

Almost surely, 2^11012001121 is an apocalyptic number.

11012001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012001121 is a deficient number, since it is larger than the sum of its proper divisors (1003056479).

11012001121 is a wasteful number, since it uses less digits than its factorization.

11012001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163799.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11012001121 its reverse (12110021011), we get a palindrome (23122022132).

The spelling of 11012001121 in words is "eleven billion, twelve million, one thousand, one hundred twenty-one".