21011042140324 has 12 divisors (see below), whose sum is σ = 37212327646704. Its totient is φ = 10378948526984.

The previous prime is 21011042140261. The next prime is 21011042140351. The reversal of 21011042140324 is 42304124011012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31643135422 + ... + 31643136085.

It is an arithmetic number, because the mean of its divisors is an integer number (3101027303892).

Almost surely, 2^{21011042140324} is an apocalyptic number.

It is an amenable number.

21011042140324 is a deficient number, since it is larger than the sum of its proper divisors (16201285506380).

21011042140324 is a wasteful number, since it uses less digits than its factorization.

21011042140324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63286271594 (or 63286271592 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21011042140324 its reverse (42304124011012), we get a palindrome (63315166151336).

The spelling of 21011042140324 in words is "twenty-one trillion, eleven billion, forty-two million, one hundred forty thousand, three hundred twenty-four".