11211101012121 has 8 divisors (see below), whose sum is σ = 14954439261984. Its totient is φ = 7470915051840.

The previous prime is 11211101012119. The next prime is 11211101012129. The reversal of 11211101012121 is 12121010111211.

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

It is not a de Polignac number, because 11211101012121 - 2¹ = 11211101012119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211101012121.

It is not an unprimeable number, because it can be changed into a prime (11211101012129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788064096 + ... + 788078321.

It is an arithmetic number, because the mean of its divisors is an integer number (1869304907748).

Almost surely, 2^{11211101012121} is an apocalyptic number.

It is an amenable number.

11211101012121 is a deficient number, since it is larger than the sum of its proper divisors (3743338249863).

11211101012121 is a wasteful number, since it uses less digits than its factorization.

11211101012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576144791.

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

Adding to 11211101012121 its reverse (12121010111211), we get a palindrome (23332111123332).

The spelling of 11211101012121 in words is "eleven trillion, two hundred eleven billion, one hundred one million, twelve thousand, one hundred twenty-one".