21000202122002 has 16 divisors (see below), whose sum is σ = 32871983155200. Its totient is φ = 10042932780672.

The previous prime is 21000202121999. The next prime is 21000202122023. The reversal of 21000202122002 is 20022120200012.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13866578 + ... + 15306285.

It is an arithmetic number, because the mean of its divisors is an integer number (2054498947200).

Almost surely, 2^{21000202122002} is an apocalyptic number.

21000202122002 is a deficient number, since it is larger than the sum of its proper divisors (11871781033198).

21000202122002 is a wasteful number, since it uses less digits than its factorization.

21000202122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29188537.

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

Adding to 21000202122002 its reverse (20022120200012), we get a palindrome (41022322322014).

The spelling of 21000202122002 in words is "twenty-one trillion, two hundred two million, one hundred twenty-two thousand, two".