21000002000212 has 12 divisors (see below), whose sum is σ = 37531918468800. Its totient is φ = 10276596723416.

The previous prime is 21000002000179. The next prime is 21000002000269. The reversal of 21000002000212 is 21200020000012.

It is a congruent 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, 55851068962 + ... + 55851069337.

It is an arithmetic number, because the mean of its divisors is an integer number (3127659872400).

Almost surely, 2^{21000002000212} is an apocalyptic number.

It is an amenable number.

21000002000212 is a deficient number, since it is larger than the sum of its proper divisors (16531916468588).

21000002000212 is a wasteful number, since it uses less digits than its factorization.

21000002000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111702138350 (or 111702138348 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21000002000212 its reverse (21200020000012), we get a palindrome (42200022000224).

The spelling of 21000002000212 in words is "twenty-one trillion, two million, two hundred twelve", and thus it is an aban number.