2121250554 has 24 divisors (see below), whose sum is σ = 4837940640. Its totient is φ = 669868488.

The previous prime is 2121250529. The next prime is 2121250561. The reversal of 2121250554 is 4550521212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3100902 + ... + 3101585.

It is an arithmetic number, because the mean of its divisors is an integer number (201580860).

Almost surely, 2^2121250554 is an apocalyptic number.

2121250554 is an abundant number, since it is smaller than the sum of its proper divisors (2716690086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121250554 is a wasteful number, since it uses less digits than its factorization.

2121250554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6202514 (or 6202511 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2121250554 is about 46057.0358794397. The cubic root of 2121250554 is about 1284.8842025990.

Adding to 2121250554 its reverse (4550521212), we get a palindrome (6671771766).

The spelling of 2121250554 in words is "two billion, one hundred twenty-one million, two hundred fifty thousand, five hundred fifty-four".