21020210000201 has 4 divisors (see below), whose sum is σ = 21020377832400. Its totient is φ = 21020042168004.

The previous prime is 21020210000173. The next prime is 21020210000203. The reversal of 21020210000201 is 10200001202012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21020210000201 - 2⁴² = 16622163489097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020210000203) 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, 83728091 + ... + 83978768.

It is an arithmetic number, because the mean of its divisors is an integer number (5255094458100).

Almost surely, 2^{21020210000201} is an apocalyptic number.

It is an amenable number.

21020210000201 is a deficient number, since it is larger than the sum of its proper divisors (167832199).

21020210000201 is a wasteful number, since it uses less digits than its factorization.

21020210000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167832198.

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

Adding to 21020210000201 its reverse (10200001202012), we get a palindrome (31220211202213).

The spelling of 21020210000201 in words is "twenty-one trillion, twenty billion, two hundred ten million, two hundred one", and thus it is an aban number.