21002022121202 has 8 divisors (see below), whose sum is σ = 32872730276736. Its totient is φ = 10044445362292.

The previous prime is 21002022121151. The next prime is 21002022121207. The reversal of 21002022121202 is 20212122020012.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21002022121207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228282849098 + ... + 228282849189.

It is an arithmetic number, because the mean of its divisors is an integer number (4109091284592).

Almost surely, 2^{21002022121202} is an apocalyptic number.

21002022121202 is a deficient number, since it is larger than the sum of its proper divisors (11870708155534).

21002022121202 is a wasteful number, since it uses less digits than its factorization.

21002022121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456565698312.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21002022121202 its reverse (20212122020012), we get a palindrome (41214144141214).

The spelling of 21002022121202 in words is "twenty-one trillion, two billion, twenty-two million, one hundred twenty-one thousand, two hundred two".