21011122032352 has 48 divisors (see below), whose sum is σ = 41403345307632. Its totient is φ = 10495988259840.

The previous prime is 21011122032349. The next prime is 21011122032359. The reversal of 21011122032352 is 25323022111012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011122032359) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 780459852 + ... + 780486772.

It is an arithmetic number, because the mean of its divisors is an integer number (862569693909).

Almost surely, 2^{21011122032352} is an apocalyptic number.

It is an amenable number.

21011122032352 is a deficient number, since it is larger than the sum of its proper divisors (20392223275280).

21011122032352 is a wasteful number, since it uses less digits than its factorization.

21011122032352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48251 (or 48243 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 21011122032352 its reverse (25323022111012), we get a palindrome (46334144143364).

The spelling of 21011122032352 in words is "twenty-one trillion, eleven billion, one hundred twenty-two million, thirty-two thousand, three hundred fifty-two".