2220012220121 has 8 divisors (see below), whose sum is σ = 2227291684200. Its totient is φ = 2212743135232.

The previous prime is 2220012220099. The next prime is 2220012220157. The reversal of 2220012220121 is 1210222100222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 786698041600 + 1433314178521 = 886960^2 + 1197211^2 .

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-2220012220121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220012220121.

It is not an unprimeable number, because it can be changed into a prime (2220012220171) 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, 2166200 + ... + 3021993.

It is an arithmetic number, because the mean of its divisors is an integer number (278411460525).

Almost surely, 2^{2220012220121} is an apocalyptic number.

It is an amenable number.

2220012220121 is a deficient number, since it is larger than the sum of its proper divisors (7279464079).

2220012220121 is an equidigital number, since it uses as much as digits as its factorization.

2220012220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189595.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2220012220121 its reverse (1210222100222), we get a palindrome (3430234320343).

The spelling of 2220012220121 in words is "two trillion, two hundred twenty billion, twelve million, two hundred twenty thousand, one hundred twenty-one".