21210120002012 has 6 divisors (see below), whose sum is σ = 37117710003528. Its totient is φ = 10605060001004.

The previous prime is 21210120001969. The next prime is 21210120002041. The reversal of 21210120002012 is 21020002101212.

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, 2651265000248 + ... + 2651265000255.

It is an arithmetic number, because the mean of its divisors is an integer number (6186285000588).

Almost surely, 2^{21210120002012} is an apocalyptic number.

It is an amenable number.

21210120002012 is a deficient number, since it is larger than the sum of its proper divisors (15907590001516).

21210120002012 is a wasteful number, since it uses less digits than its factorization.

21210120002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302530000507 (or 5302530000505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210120002012 its reverse (21020002101212), we get a palindrome (42230122103224).

The spelling of 21210120002012 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty million, two thousand, twelve".