2011220121121 has 8 divisors (see below), whose sum is σ = 2064173600160. Its totient is φ = 1958941208928.

The previous prime is 2011220121067. The next prime is 2011220121179. The reversal of 2011220121121 is 1211210221102.

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-2011220121121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011220121095 and 2011220121104.

It is not an unprimeable number, because it can be changed into a prime (2011220121181) 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, 168635671 + ... + 168647596.

It is an arithmetic number, because the mean of its divisors is an integer number (258021700020).

Almost surely, 2^{2011220121121} is an apocalyptic number.

It is an amenable number.

2011220121121 is a deficient number, since it is larger than the sum of its proper divisors (52953479039).

2011220121121 is an equidigital number, since it uses as much as digits as its factorization.

2011220121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337283423.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2011220121121 its reverse (1211210221102), we get a palindrome (3222430342223).

The spelling of 2011220121121 in words is "two trillion, eleven billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-one".