220342311231500 has 96 divisors (see below), whose sum is σ = 485746276631616. Its totient is φ = 87313169932800.

The previous prime is 220342311231499. The next prime is 220342311231607. The reversal of 220342311231500 is 5132113243022.

It is a super-2 number, since 2×220342311231500² (a number of 29 digits) contains 22 as substring.

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, 18150119 + ... + 27750881.

It is an arithmetic number, because the mean of its divisors is an integer number (5059857048246).

Almost surely, 2^{220342311231500} is an apocalyptic number.

220342311231500 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 220342311231500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242873138315808).

220342311231500 is an abundant number, since it is smaller than the sum of its proper divisors (265403965400116).

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

220342311231500 is a wasteful number, since it uses less digits than its factorization.

220342311231500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9601212 (or 9601200 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 220342311231500 its reverse (5132113243022), we get a palindrome (225474424474522).

The spelling of 220342311231500 in words is "two hundred twenty trillion, three hundred forty-two billion, three hundred eleven million, two hundred thirty-one thousand, five hundred".