11220121010121 has 8 divisors (see below), whose sum is σ = 15308072076000. Its totient is φ = 7306125308832.

The previous prime is 11220121010089. The next prime is 11220121010177. The reversal of 11220121010121 is 12101012102211.

It is a happy number.

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

It is not a de Polignac number, because 11220121010121 - 2⁵ = 11220121010089 is a prime.

It is a super-2 number, since 2×11220121010121² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11220121010121.

It is not an unprimeable number, because it can be changed into a prime (11220121010521) 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, 43488840996 + ... + 43488841253.

It is an arithmetic number, because the mean of its divisors is an integer number (1913509009500).

Almost surely, 2^{11220121010121} is an apocalyptic number.

It is an amenable number.

11220121010121 is a deficient number, since it is larger than the sum of its proper divisors (4087951065879).

11220121010121 is an equidigital number, since it uses as much as digits as its factorization.

11220121010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86977682295.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11220121010121 its reverse (12101012102211), we get a palindrome (23321133112332).

The spelling of 11220121010121 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, ten thousand, one hundred twenty-one".