210021111020201 has 16 divisors (see below), whose sum is σ = 226203902937600. Its totient is φ = 193842224072640.

The previous prime is 210021111020113. The next prime is 210021111020243. The reversal of 210021111020201 is 102020111120012.

It is not a de Polignac number, because 210021111020201 - 2²⁶ = 210021043911337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021111020291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7226393996 + ... + 7226423058.

It is an arithmetic number, because the mean of its divisors is an integer number (14137743933600).

Almost surely, 2^{210021111020201} is an apocalyptic number.

It is an amenable number.

210021111020201 is a deficient number, since it is larger than the sum of its proper divisors (16182791917399).

210021111020201 is a wasteful number, since it uses less digits than its factorization.

210021111020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77096.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210021111020201 its reverse (102020111120012), we get a palindrome (312041222140213).

The spelling of 210021111020201 in words is "two hundred ten trillion, twenty-one billion, one hundred eleven million, twenty thousand, two hundred one".