11111011120121 has 8 divisors (see below), whose sum is σ = 12246062866464. Its totient is φ = 9996786011520.

The previous prime is 11111011120103. The next prime is 11111011120127. The reversal of 11111011120121 is 12102111011111.

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

It is not a de Polignac number, because 11111011120121 - 2¹⁴ = 11111011103737 is a prime.

It is a super-2 number, since 2×11111011120121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111011120096 and 11111011120105.

It is not an unprimeable number, because it can be changed into a prime (11111011120127) 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, 5206658315 + ... + 5206660448.

It is an arithmetic number, because the mean of its divisors is an integer number (1530757858308).

Almost surely, 2^{11111011120121} is an apocalyptic number.

11111011120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111011120121 is a deficient number, since it is larger than the sum of its proper divisors (1135051746343).

11111011120121 is a wasteful number, since it uses less digits than its factorization.

11111011120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10413318871.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11111011120121 its reverse (12102111011111), we get a palindrome (23213122131232).

The spelling of 11111011120121 in words is "eleven trillion, one hundred eleven billion, eleven million, one hundred twenty thousand, one hundred twenty-one".