21101202210012 has 12 divisors (see below), whose sum is σ = 49236138490056. Its totient is φ = 7033734070000.

The previous prime is 21101202209953. The next prime is 21101202210037. The reversal of 21101202210012 is 21001220210112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 21101202209973 and 21101202210000.

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, 879216758739 + ... + 879216758762.

It is an arithmetic number, because the mean of its divisors is an integer number (4103011540838).

Almost surely, 2^{21101202210012} is an apocalyptic number.

It is an amenable number.

21101202210012 is an abundant number, since it is smaller than the sum of its proper divisors (28134936280044).

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

21101202210012 is a wasteful number, since it uses less digits than its factorization.

21101202210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758433517508 (or 1758433517506 counting only the distinct ones).

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

Adding to 21101202210012 its reverse (21001220210112), we get a palindrome (42102422420124).

The spelling of 21101202210012 in words is "twenty-one trillion, one hundred one billion, two hundred two million, two hundred ten thousand, twelve".