21020022102002 has 96 divisors (see below), whose sum is σ = 40629648755520. Its totient is φ = 8063991936000.

The previous prime is 21020022101993. The next prime is 21020022102019. The reversal of 21020022102002 is 20020122002012.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 22667477 + ... + 23576567.

It is an arithmetic number, because the mean of its divisors is an integer number (423225507870).

Almost surely, 2^{21020022102002} is an apocalyptic number.

21020022102002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21020022102002 is a deficient number, since it is larger than the sum of its proper divisors (19609626653518).

21020022102002 is a wasteful number, since it uses less digits than its factorization.

21020022102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909448 (or 909441 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21020022102002 its reverse (20020122002012), we get a palindrome (41040144104014).

The spelling of 21020022102002 in words is "twenty-one trillion, twenty billion, twenty-two million, one hundred two thousand, two".