2221865812410 has 64 divisors (see below), whose sum is σ = 5421418646400. Its totient is φ = 582693996800.

The previous prime is 2221865812399. The next prime is 2221865812421. The reversal of 2221865812410 is 142185681222.

It is an interprime number because it is at equal distance from previous prime (2221865812399) and next prime (2221865812421).

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 2009232 + ... + 2912171.

It is an arithmetic number, because the mean of its divisors is an integer number (84709666350).

Almost surely, 2^{2221865812410} is an apocalyptic number.

2221865812410 is an abundant number, since it is smaller than the sum of its proper divisors (3199552833990).

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

2221865812410 is a wasteful number, since it uses less digits than its factorization.

2221865812410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921663.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 2221865812410 in words is "two trillion, two hundred twenty-one billion, eight hundred sixty-five million, eight hundred twelve thousand, four hundred ten".