21134120124140 has 24 divisors (see below), whose sum is σ = 44381875895952. Its totient is φ = 8453605452480.

The previous prime is 21134120124137. The next prime is 21134120124151. The reversal of 21134120124140 is 4142102143112.

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, 1570127 + ... + 6688313.

It is an arithmetic number, because the mean of its divisors is an integer number (1849244828998).

Almost surely, 2^{21134120124140} is an apocalyptic number.

21134120124140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21134120124140 is an abundant number, since it is smaller than the sum of its proper divisors (23247755771812).

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

21134120124140 is a wasteful number, since it uses less digits than its factorization.

21134120124140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324657 (or 5324655 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 21134120124140 its reverse (4142102143112), we get a palindrome (25276222267252).

The spelling of 21134120124140 in words is "twenty-one trillion, one hundred thirty-four billion, one hundred twenty million, one hundred twenty-four thousand, one hundred forty".