2220031121 has 8 divisors (see below), whose sum is σ = 2767831104. Its totient is φ = 1729894320.

The previous prime is 2220031091. The next prime is 2220031123. The reversal of 2220031121 is 1211300222.

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 2220031121 - 2¹⁰ = 2220030097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220031096 and 2220031105.

It is not an unprimeable number, because it can be changed into a prime (2220031123) 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, 14415710 + ... + 14415863.

It is an arithmetic number, because the mean of its divisors is an integer number (345978888).

Almost surely, 2^2220031121 is an apocalyptic number.

It is an amenable number.

2220031121 is a deficient number, since it is larger than the sum of its proper divisors (547799983).

2220031121 is a wasteful number, since it uses less digits than its factorization.

2220031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28831591.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2220031121 is about 47117.2062096216. The cubic root of 2220031121 is about 1304.5268457863.

Adding to 2220031121 its reverse (1211300222), we get a palindrome (3431331343).

The spelling of 2220031121 in words is "two billion, two hundred twenty million, thirty-one thousand, one hundred twenty-one".