21020102200001 has 8 divisors (see below), whose sum is σ = 21146920227360. Its totient is φ = 20893584335008.

The previous prime is 21020102199979. The next prime is 21020102200049. The reversal of 21020102200001 is 10000220102012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21020102200001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21020102200061) by changing a digit.

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, 74900111 + ... + 75180228.

It is an arithmetic number, because the mean of its divisors is an integer number (2643365028420).

Almost surely, 2^{21020102200001} is an apocalyptic number.

It is an amenable number.

21020102200001 is a deficient number, since it is larger than the sum of its proper divisors (126818027359).

21020102200001 is a wasteful number, since it uses less digits than its factorization.

21020102200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150081183.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21020102200001 its reverse (10000220102012), we get a palindrome (31020322302013).

The spelling of 21020102200001 in words is "twenty-one trillion, twenty billion, one hundred two million, two hundred thousand, one".