21011040132140 has 48 divisors (see below), whose sum is σ = 44487850491840. Its totient is φ = 8335137427200.

The previous prime is 21011040132133. The next prime is 21011040132151. The reversal of 21011040132140 is 4123104011012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3823535 + ... + 7526054.

It is an arithmetic number, because the mean of its divisors is an integer number (926830218580).

Almost surely, 2^{21011040132140} is an apocalyptic number.

21011040132140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21011040132140 is an abundant number, since it is smaller than the sum of its proper divisors (23476810359700).

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

21011040132140 is a wasteful number, since it uses less digits than its factorization.

21011040132140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11350362 (or 11350360 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21011040132140 its reverse (4123104011012), we get a palindrome (25134144143152).

The spelling of 21011040132140 in words is "twenty-one trillion, eleven billion, forty million, one hundred thirty-two thousand, one hundred forty".