21001332002102 has 8 divisors (see below), whose sum is σ = 32018424200112. Its totient is φ = 10328523935400.

The previous prime is 21001332002099. The next prime is 21001332002107. The reversal of 21001332002102 is 20120023310012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001332002107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86071032674 + ... + 86071032917.

It is an arithmetic number, because the mean of its divisors is an integer number (4002303025014).

Almost surely, 2^{21001332002102} is an apocalyptic number.

21001332002102 is a deficient number, since it is larger than the sum of its proper divisors (11017092198010).

21001332002102 is a wasteful number, since it uses less digits than its factorization.

21001332002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172142065654.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21001332002102 its reverse (20120023310012), we get a palindrome (41121355312114).

The spelling of 21001332002102 in words is "twenty-one trillion, one billion, three hundred thirty-two million, two thousand, one hundred two".