21115346223500 has 48 divisors (see below), whose sum is σ = 46131892951872. Its totient is φ = 8443212336000.

The previous prime is 21115346223469. The next prime is 21115346223547. The reversal of 21115346223500 is 532264351112.

It is a super-2 number, since 2×21115346223500² (a number of 27 digits) contains 22 as substring.

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, 5870441 + ... + 8757440.

It is an arithmetic number, because the mean of its divisors is an integer number (961081103164).

Almost surely, 2^{21115346223500} is an apocalyptic number.

21115346223500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21115346223500 is an abundant number, since it is smaller than the sum of its proper divisors (25016546728372).

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

21115346223500 is a wasteful number, since it uses less digits than its factorization.

21115346223500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14630787 (or 14630775 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21115346223500 in words is "twenty-one trillion, one hundred fifteen billion, three hundred forty-six million, two hundred twenty-three thousand, five hundred".