21202101002212 has 144 divisors (see below), whose sum is σ = 42587063487360. Its totient is φ = 9205975793664.

The previous prime is 21202101002197. The next prime is 21202101002221. The reversal of 21202101002212 is 21220010120212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2473120758 + ... + 2473129330.

It is an arithmetic number, because the mean of its divisors is an integer number (295743496440).

Almost surely, 2^{21202101002212} is an apocalyptic number.

It is an amenable number.

21202101002212 is an abundant number, since it is smaller than the sum of its proper divisors (21384962485148).

21202101002212 is a wasteful number, since it uses less digits than its factorization.

21202101002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9942 (or 9927 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21202101002212 its reverse (21220010120212), we get a palindrome (42422111122424).

The spelling of 21202101002212 in words is "twenty-one trillion, two hundred two billion, one hundred one million, two thousand, two hundred twelve".