2122155530 has 32 divisors (see below), whose sum is σ = 4301572608. Its totient is φ = 746798400.

The previous prime is 2122155527. The next prime is 2122155557. The reversal of 2122155530 is 355512212.

It is a self number, because there is not a number n which added to its sum of digits gives 2122155530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307757 + ... + 314576.

It is an arithmetic number, because the mean of its divisors is an integer number (134424144).

Almost surely, 2^2122155530 is an apocalyptic number.

2122155530 is an abundant number, since it is smaller than the sum of its proper divisors (2179417078).

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

2122155530 is a wasteful number, since it uses less digits than its factorization.

2122155530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622382.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2122155530 is about 46066.8593459550. The cubic root of 2122155530 is about 1285.0668973535.

Adding to 2122155530 its reverse (355512212), we get a palindrome (2477667742).

The spelling of 2122155530 in words is "two billion, one hundred twenty-two million, one hundred fifty-five thousand, five hundred thirty".