21001121302002 has 64 divisors (see below), whose sum is σ = 43686534418560. Its totient is φ = 6725033280000.

The previous prime is 21001121301949. The next prime is 21001121302037. The reversal of 21001121302002 is 20020312110012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299002624 + ... + 299072852.

It is an arithmetic number, because the mean of its divisors is an integer number (682602100290).

Almost surely, 2^{21001121302002} is an apocalyptic number.

21001121302002 is an abundant number, since it is smaller than the sum of its proper divisors (22685413116558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21001121302002 is a wasteful number, since it uses less digits than its factorization.

21001121302002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89339.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21001121302002 its reverse (20020312110012), we get a palindrome (41021433412014).

The spelling of 21001121302002 in words is "twenty-one trillion, one billion, one hundred twenty-one million, three hundred two thousand, two".