210021200101201 has 4 divisors (see below), whose sum is σ = 210023015548852. Its totient is φ = 210019384653552.

The previous prime is 210021200101183. The next prime is 210021200101217. The reversal of 210021200101201 is 102101002120012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10381284000000 + 199639916101201 = 3222000^2 + 14129399^2 .

It is a cyclic number.

It is not a de Polignac number, because 210021200101201 - 2⁵ = 210021200101169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021200101901) 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, 907550286 + ... + 907781671.

It is an arithmetic number, because the mean of its divisors is an integer number (52505753887213).

Almost surely, 2^{210021200101201} is an apocalyptic number.

It is an amenable number.

210021200101201 is a deficient number, since it is larger than the sum of its proper divisors (1815447651).

210021200101201 is a wasteful number, since it uses less digits than its factorization.

210021200101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815447650.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210021200101201 its reverse (102101002120012), we get a palindrome (312122202221213).

The spelling of 210021200101201 in words is "two hundred ten trillion, twenty-one billion, two hundred million, one hundred one thousand, two hundred one".