21010211210012 has 6 divisors (see below), whose sum is σ = 36767869617528. Its totient is φ = 10505105605004.

The previous prime is 21010211209993. The next prime is 21010211210033. The reversal of 21010211210012 is 21001211201012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2626276401248 + ... + 2626276401255.

It is an arithmetic number, because the mean of its divisors is an integer number (6127978269588).

Almost surely, 2^{21010211210012} is an apocalyptic number.

It is an amenable number.

21010211210012 is a deficient number, since it is larger than the sum of its proper divisors (15757658407516).

21010211210012 is a wasteful number, since it uses less digits than its factorization.

21010211210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252552802507 (or 5252552802505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21010211210012 its reverse (21001211201012), we get a palindrome (42011422411024).

The spelling of 21010211210012 in words is "twenty-one trillion, ten billion, two hundred eleven million, two hundred ten thousand, twelve".