2220002122121 has 8 divisors (see below), whose sum is σ = 2547017445120. Its totient is φ = 1895454839808.

The previous prime is 2220002122103. The next prime is 2220002122139. The reversal of 2220002122121 is 1212212000222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2220002122103) and next prime (2220002122139).

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-2220002122121 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 2220002122121.

It is not an unprimeable number, because it can be changed into a prime (2220002127121) 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, 617008241 + ... + 617011838.

It is an arithmetic number, because the mean of its divisors is an integer number (318377180640).

Almost surely, 2^{2220002122121} is an apocalyptic number.

It is an amenable number.

2220002122121 is a deficient number, since it is larger than the sum of its proper divisors (327015322999).

2220002122121 is a wasteful number, since it uses less digits than its factorization.

2220002122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234020343.

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

Adding to 2220002122121 its reverse (1212212000222), we get a palindrome (3432214122343).

The spelling of 2220002122121 in words is "two trillion, two hundred twenty billion, two million, one hundred twenty-two thousand, one hundred twenty-one".