21150012305026 has 16 divisors (see below), whose sum is σ = 34951775514048. Its totient is φ = 9518457382000.

The previous prime is 21150012304999. The next prime is 21150012305027. The reversal of 21150012305026 is 62050321005112.

It is a junction number, because it is equal to n+sod(n) for n = 21150012304985 and 21150012305003.

It is not an unprimeable number, because it can be changed into a prime (21150012305027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4759226470 + ... + 4759230913.

It is an arithmetic number, because the mean of its divisors is an integer number (2184485969628).

Almost surely, 2^{21150012305026} is an apocalyptic number.

21150012305026 is a deficient number, since it is larger than the sum of its proper divisors (13801763209022).

21150012305026 is a wasteful number, since it uses less digits than its factorization.

21150012305026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518457497.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 21150012305026 in words is "twenty-one trillion, one hundred fifty billion, twelve million, three hundred five thousand, twenty-six".