21002201002101 has 8 divisors (see below), whose sum is σ = 30548656003104. Its totient is φ = 12728606667920.

The previous prime is 21002201002091. The next prime is 21002201002121. The reversal of 21002201002101 is 10120010220012.

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

It is not a de Polignac number, because 21002201002101 - 2²² = 21002196807797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002201002121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318215166666 + ... + 318215166731.

It is an arithmetic number, because the mean of its divisors is an integer number (3818582000388).

Almost surely, 2^{21002201002101} is an apocalyptic number.

It is an amenable number.

21002201002101 is a deficient number, since it is larger than the sum of its proper divisors (9546455001003).

21002201002101 is a wasteful number, since it uses less digits than its factorization.

21002201002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636430333411.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21002201002101 its reverse (10120010220012), we get a palindrome (31122211222113).

The spelling of 21002201002101 in words is "twenty-one trillion, two billion, two hundred one million, two thousand, one hundred one".