21200462311140 has 192 divisors, whose sum is σ = 75769991109120. Its totient is φ = 4820711915520.

The previous prime is 21200462311139. The next prime is 21200462311157. The reversal of 21200462311140 is 4111326400212.

21200462311140 is a `hidden beast` number, since 2 + 1 + 20 + 0 + 4 + 623 + 1 + 1 + 14 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13800481 + ... + 15259560.

It is an arithmetic number, because the mean of its divisors is an integer number (394635370360).

Almost surely, 2^{21200462311140} is an apocalyptic number.

21200462311140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21200462311140 is an abundant number, since it is smaller than the sum of its proper divisors (54569528797980).

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

21200462311140 is a wasteful number, since it uses less digits than its factorization.

21200462311140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29060259 (or 29060251 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21200462311140 its reverse (4111326400212), we get a palindrome (25311788711352).

The spelling of 21200462311140 in words is "twenty-one trillion, two hundred billion, four hundred sixty-two million, three hundred eleven thousand, one hundred forty".