21150024602212 has 12 divisors (see below), whose sum is σ = 40377319695216. Its totient is φ = 9613647546440.

The previous prime is 21150024602177. The next prime is 21150024602221. The reversal of 21150024602212 is 21220642005112.

It is a happy number.

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, 240341188618 + ... + 240341188705.

It is an arithmetic number, because the mean of its divisors is an integer number (3364776641268).

Almost surely, 2^{21150024602212} is an apocalyptic number.

21150024602212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21150024602212 is a deficient number, since it is larger than the sum of its proper divisors (19227295093004).

21150024602212 is a wasteful number, since it uses less digits than its factorization.

21150024602212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480682377338 (or 480682377336 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 21150024602212 its reverse (21220642005112), we get a palindrome (42370666607324).

The spelling of 21150024602212 in words is "twenty-one trillion, one hundred fifty billion, twenty-four million, six hundred two thousand, two hundred twelve".