11011021211121 has 8 divisors (see below), whose sum is σ = 14729183640864. Its totient is φ = 7316769794400.

The previous prime is 11011021211119. The next prime is 11011021211129. The reversal of 11011021211121 is 12111212011011.

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

It is not a de Polignac number, because 11011021211121 - 2¹ = 11011021211119 is a prime.

It is a super-2 number, since 2×11011021211121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011021211121.

It is not an unprimeable number, because it can be changed into a prime (11011021211129) 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, 5977752180 + ... + 5977754021.

It is an arithmetic number, because the mean of its divisors is an integer number (1841147955108).

Almost surely, 2^{11011021211121} is an apocalyptic number.

It is an amenable number.

11011021211121 is a deficient number, since it is larger than the sum of its proper divisors (3718162429743).

11011021211121 is a wasteful number, since it uses less digits than its factorization.

11011021211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11955506511.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11011021211121 its reverse (12111212011011), we get a palindrome (23122233222132).

The spelling of 11011021211121 in words is "eleven trillion, eleven billion, twenty-one million, two hundred eleven thousand, one hundred twenty-one".