2220021111121 has 4 divisors (see below), whose sum is σ = 2421841212144. Its totient is φ = 2018201010100.

The previous prime is 2220021111059. The next prime is 2220021111131. The reversal of 2220021111121 is 1211111200222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2220021111121 - 2¹⁷ = 2220020980049 is a prime.

It is a super-3 number, since 3×2220021111121³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220021111095 and 2220021111104.

It is not an unprimeable number, because it can be changed into a prime (2220021111131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100910050495 + ... + 100910050516.

It is an arithmetic number, because the mean of its divisors is an integer number (605460303036).

Almost surely, 2^{2220021111121} is an apocalyptic number.

It is an amenable number.

2220021111121 is a deficient number, since it is larger than the sum of its proper divisors (201820101023).

2220021111121 is a wasteful number, since it uses less digits than its factorization.

2220021111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201820101022.

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

Adding to 2220021111121 its reverse (1211111200222), we get a palindrome (3431132311343).

The spelling of 2220021111121 in words is "two trillion, two hundred twenty billion, twenty-one million, one hundred eleven thousand, one hundred twenty-one".