21002002221202 has 8 divisors (see below), whose sum is σ = 33161056138800. Its totient is φ = 9948316841604.

The previous prime is 21002002221191. The next prime is 21002002221217. The reversal of 21002002221202 is 20212220020012.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 276342134452 + ... + 276342134527.

It is an arithmetic number, because the mean of its divisors is an integer number (4145132017350).

Almost surely, 2^{21002002221202} is an apocalyptic number.

21002002221202 is a deficient number, since it is larger than the sum of its proper divisors (12159053917598).

21002002221202 is a wasteful number, since it uses less digits than its factorization.

21002002221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552684269000.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21002002221202 its reverse (20212220020012), we get a palindrome (41214222241214).

The spelling of 21002002221202 in words is "twenty-one trillion, two billion, two million, two hundred twenty-one thousand, two hundred two".