21201002210012 has 6 divisors (see below), whose sum is σ = 37101753867528. Its totient is φ = 10600501105004.

The previous prime is 21201002209949. The next prime is 21201002210053. The reversal of 21201002210012 is 21001220010212.

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, 2650125276248 + ... + 2650125276255.

It is an arithmetic number, because the mean of its divisors is an integer number (6183625644588).

Almost surely, 2^{21201002210012} is an apocalyptic number.

It is an amenable number.

21201002210012 is a deficient number, since it is larger than the sum of its proper divisors (15900751657516).

21201002210012 is a wasteful number, since it uses less digits than its factorization.

21201002210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5300250552507 (or 5300250552505 counting only the distinct ones).

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

Adding to 21201002210012 its reverse (21001220010212), we get a palindrome (42202222220224).

The spelling of 21201002210012 in words is "twenty-one trillion, two hundred one billion, two million, two hundred ten thousand, twelve".