21212012112002 has 32 divisors (see below), whose sum is σ = 33292179892224. Its totient is φ = 10117177646400.

The previous prime is 21212012111999. The next prime is 21212012112017. The reversal of 21212012112002 is 20021121021212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24538463 + ... + 25388189.

It is an arithmetic number, because the mean of its divisors is an integer number (1040380621632).

Almost surely, 2^{21212012112002} is an apocalyptic number.

21212012112002 is a deficient number, since it is larger than the sum of its proper divisors (12080167780222).

21212012112002 is a wasteful number, since it uses less digits than its factorization.

21212012112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851234.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21212012112002 its reverse (20021121021212), we get a palindrome (41233133133214).

The spelling of 21212012112002 in words is "twenty-one trillion, two hundred twelve billion, twelve million, one hundred twelve thousand, two".