21211020102201 has 16 divisors (see below), whose sum is σ = 29074508016000. Its totient is φ = 13744863675648.

The previous prime is 21211020102163. The next prime is 21211020102203. The reversal of 21211020102201 is 10220102011212.

It is not a de Polignac number, because 21211020102201 - 2⁷ = 21211020102073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21211020102203) 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, 94580901 + ... + 94804898.

It is an arithmetic number, because the mean of its divisors is an integer number (1817156751000).

Almost surely, 2^{21211020102201} is an apocalyptic number.

It is an amenable number.

21211020102201 is a deficient number, since it is larger than the sum of its proper divisors (7863487913799).

21211020102201 is a wasteful number, since it uses less digits than its factorization.

21211020102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189386848.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21211020102201 its reverse (10220102011212), we get a palindrome (31431122113413).

The spelling of 21211020102201 in words is "twenty-one trillion, two hundred eleven billion, twenty million, one hundred two thousand, two hundred one".