11012204121 has 16 divisors (see below), whose sum is σ = 16048147968. Its totient is φ = 6686726400.

The previous prime is 11012204117. The next prime is 11012204123. The reversal of 11012204121 is 12140221011.

It is not a de Polignac number, because 11012204121 - 2² = 11012204117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11012204121.

It is not an unprimeable number, because it can be changed into a prime (11012204123) 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, 3481090 + ... + 3484251.

It is an arithmetic number, because the mean of its divisors is an integer number (1003009248).

Almost surely, 2^11012204121 is an apocalyptic number.

It is an amenable number.

11012204121 is a deficient number, since it is larger than the sum of its proper divisors (5035943847).

11012204121 is a wasteful number, since it uses less digits than its factorization.

11012204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6965392.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11012204121 its reverse (12140221011), we get a palindrome (23152425132).

The spelling of 11012204121 in words is "eleven billion, twelve million, two hundred four thousand, one hundred twenty-one".