2553220121 has 8 divisors (see below), whose sum is σ = 2599681344. Its totient is φ = 2507004720.

The previous prime is 2553220099. The next prime is 2553220127. The reversal of 2553220121 is 1210223552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2553220121 - 2¹⁸ = 2552957977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2553220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40430 + ... + 82103.

It is an arithmetic number, because the mean of its divisors is an integer number (324960168).

Almost surely, 2^2553220121 is an apocalyptic number.

It is an amenable number.

2553220121 is a deficient number, since it is larger than the sum of its proper divisors (46461223).

2553220121 is a wasteful number, since it uses less digits than its factorization.

2553220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122911.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2553220121 is about 50529.3985814199. The cubic root of 2553220121 is about 1366.7720407019.

Adding to 2553220121 its reverse (1210223552), we get a palindrome (3763443673).

The spelling of 2553220121 in words is "two billion, five hundred fifty-three million, two hundred twenty thousand, one hundred twenty-one".