21013122012332 has 12 divisors (see below), whose sum is σ = 36784868031240. Its totient is φ = 10503159717696.

The previous prime is 21013122012251. The next prime is 21013122012367. The reversal of 21013122012332 is 23321022131012.

It is a junction number, because it is equal to n+sod(n) for n = 21013122012298 and 21013122012307.

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, 850308218 + ... + 850332929.

It is an arithmetic number, because the mean of its divisors is an integer number (3065405669270).

Almost surely, 2^{21013122012332} is an apocalyptic number.

It is an amenable number.

21013122012332 is a deficient number, since it is larger than the sum of its proper divisors (15771746018908).

21013122012332 is a wasteful number, since it uses less digits than its factorization.

21013122012332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700644240 (or 1700644238 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21013122012332 its reverse (23321022131012), we get a palindrome (44334144143344).

The spelling of 21013122012332 in words is "twenty-one trillion, thirteen billion, one hundred twenty-two million, twelve thousand, three hundred thirty-two".