2181225810262 has 64 divisors (see below), whose sum is σ = 3599632802304. Its totient is φ = 988156350720.

The previous prime is 2181225810221. The next prime is 2181225810289. The reversal of 2181225810262 is 2620185221812.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 22419562 + ... + 22516642.

It is an arithmetic number, because the mean of its divisors is an integer number (56244262536).

Almost surely, 2^{2181225810262} is an apocalyptic number.

2181225810262 is a deficient number, since it is larger than the sum of its proper divisors (1418406992042).

2181225810262 is a wasteful number, since it uses less digits than its factorization.

2181225810262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97493.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 2181225810262 in words is "two trillion, one hundred eighty-one billion, two hundred twenty-five million, eight hundred ten thousand, two hundred sixty-two".