226311221520 has 120 divisors (see below), whose sum is σ = 760225931712. Its totient is φ = 60333984000.

The previous prime is 226311221453. The next prime is 226311221533. The reversal of 226311221520 is 25122113622.

226311221520 is a `hidden beast` number, since 2 + 2 + 6 + 3 + 112 + 21 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×226311221520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2877925 + ... + 2955515.

Almost surely, 2^226311221520 is an apocalyptic number.

226311221520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226311221520 is an abundant number, since it is smaller than the sum of its proper divisors (533914710192).

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

226311221520 is a wasteful number, since it uses less digits than its factorization.

226311221520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81661 (or 81652 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 226311221520 in words is "two hundred twenty-six billion, three hundred eleven million, two hundred twenty-one thousand, five hundred twenty".