213222535120520 has 128 divisors (see below), whose sum is σ = 505813737542400. Its totient is φ = 80732831072256.

The previous prime is 213222535120519. The next prime is 213222535120547. The reversal of 213222535120520 is 25021535222312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107282887 + ... + 1107475433.

It is an arithmetic number, because the mean of its divisors is an integer number (3951669824550).

Almost surely, 2^{213222535120520} is an apocalyptic number.

213222535120520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213222535120520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252906868771200).

213222535120520 is an abundant number, since it is smaller than the sum of its proper divisors (292591202421880).

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

213222535120520 is a wasteful number, since it uses less digits than its factorization.

213222535120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205087 (or 205083 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 213222535120520 in words is "two hundred thirteen trillion, two hundred twenty-two billion, five hundred thirty-five million, one hundred twenty thousand, five hundred twenty".