21247714306120 has 32 divisors (see below), whose sum is σ = 48919156197120. Its totient is φ = 8301432565440.

The previous prime is 21247714306057. The next prime is 21247714306141. The reversal of 21247714306120 is 2160341774212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6176659416 + ... + 6176662855.

It is an arithmetic number, because the mean of its divisors is an integer number (1528723631160).

Almost surely, 2^{21247714306120} is an apocalyptic number.

21247714306120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21247714306120 is an abundant number, since it is smaller than the sum of its proper divisors (27671441891000).

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

21247714306120 is a wasteful number, since it uses less digits than its factorization.

21247714306120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12353322325 (or 12353322321 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 21247714306120 in words is "twenty-one trillion, two hundred forty-seven billion, seven hundred fourteen million, three hundred six thousand, one hundred twenty".