21010201212012 has 24 divisors (see below), whose sum is σ = 49027447826112. Its totient is φ = 7002879690000.

The previous prime is 21010201211999. The next prime is 21010201212019. The reversal of 21010201212012 is 21021210201012.

It is a junction number, because it is equal to n+sod(n) for n = 21010201211982 and 21010201212000.

It is not an unprimeable number, because it can be changed into a prime (21010201212019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64921114 + ... + 65243937.

It is an arithmetic number, because the mean of its divisors is an integer number (2042810326088).

Almost surely, 2^{21010201212012} is an apocalyptic number.

It is an amenable number.

21010201212012 is an abundant number, since it is smaller than the sum of its proper divisors (28017246614100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010201212012 is a wasteful number, since it uses less digits than its factorization.

21010201212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130178509 (or 130178507 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21010201212012 its reverse (21021210201012), we get a palindrome (42031411413024).

The spelling of 21010201212012 in words is "twenty-one trillion, ten billion, two hundred one million, two hundred twelve thousand, twelve".