21202101201 has 16 divisors (see below), whose sum is σ = 29630877696. Its totient is φ = 13459542096.

The previous prime is 21202101199. The next prime is 21202101227. The reversal of 21202101201 is 10210120212.

It is not a de Polignac number, because 21202101201 - 2¹ = 21202101199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202101251) 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, 673575 + ... + 704348.

It is an arithmetic number, because the mean of its divisors is an integer number (1851929856).

Almost surely, 2^21202101201 is an apocalyptic number.

It is an amenable number.

21202101201 is a deficient number, since it is larger than the sum of its proper divisors (8428776495).

21202101201 is a wasteful number, since it uses less digits than its factorization.

21202101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378172.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21202101201 its reverse (10210120212), we get a palindrome (31412221413).

The spelling of 21202101201 in words is "twenty-one billion, two hundred two million, one hundred one thousand, two hundred one".