21121031424300 has 144 divisors (see below), whose sum is σ = 63769756307712. Its totient is φ = 5387173228800.

The previous prime is 21121031424257. The next prime is 21121031424329. The reversal of 21121031424300 is 342413012112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229937982 + ... + 230029818.

Almost surely, 2^{21121031424300} is an apocalyptic number.

21121031424300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121031424300 is an abundant number, since it is smaller than the sum of its proper divisors (42648724883412).

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

21121031424300 is a wasteful number, since it uses less digits than its factorization.

21121031424300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125208 (or 125201 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21121031424300 its reverse (342413012112), we get a palindrome (21463444436412).

The spelling of 21121031424300 in words is "twenty-one trillion, one hundred twenty-one billion, thirty-one million, four hundred twenty-four thousand, three hundred".