11121010012121 has 8 divisors (see below), whose sum is σ = 11237526000264. Its totient is φ = 11004619651200.

The previous prime is 11121010012109. The next prime is 11121010012141. The reversal of 11121010012121 is 12121001012111.

It can be written as a sum of positive squares in 4 ways, for example, as 58660840000 + 11062349172121 = 242200^2 + 3326011^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121010012121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11121010012096 and 11121010012105.

It is not an unprimeable number, because it can be changed into a prime (11121010012141) 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, 31228826 + ... + 31582931.

It is an arithmetic number, because the mean of its divisors is an integer number (1404690750033).

Almost surely, 2^{11121010012121} is an apocalyptic number.

It is an amenable number.

11121010012121 is a deficient number, since it is larger than the sum of its proper divisors (116515988143).

11121010012121 is a wasteful number, since it uses less digits than its factorization.

11121010012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62813611.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121010012121 its reverse (12121001012111), we get a palindrome (23242011024232).

The spelling of 11121010012121 in words is "eleven trillion, one hundred twenty-one billion, ten million, twelve thousand, one hundred twenty-one".