21554323225210 has 32 divisors (see below), whose sum is σ = 38953340899200. Its totient is φ = 8587162344000.

The previous prime is 21554323225207. The next prime is 21554323225241. The reversal of 21554323225210 is 1252232345512.

It is a self number, because there is not a number n which added to its sum of digits gives 21554323225210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130108411 + ... + 130273969.

It is an arithmetic number, because the mean of its divisors is an integer number (1217291903100).

Almost surely, 2^{21554323225210} is an apocalyptic number.

21554323225210 is a deficient number, since it is larger than the sum of its proper divisors (17399017673990).

21554323225210 is a wasteful number, since it uses less digits than its factorization.

21554323225210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217686.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 21554323225210 in words is "twenty-one trillion, five hundred fifty-four billion, three hundred twenty-three million, two hundred twenty-five thousand, two hundred ten".