21202111010201 has 16 divisors (see below), whose sum is σ = 24147116817408. Its totient is φ = 18427522304400.

The previous prime is 21202111010167. The next prime is 21202111010219. The reversal of 21202111010201 is 10201011120212.

It is a de Polignac number, because none of the positive numbers 2^k-21202111010201 is a prime.

It is a super-2 number, since 2×21202111010201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202111090201) 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, 20158805 + ... + 21184466.

It is an arithmetic number, because the mean of its divisors is an integer number (1509194801088).

Almost surely, 2^{21202111010201} is an apocalyptic number.

It is an amenable number.

21202111010201 is a deficient number, since it is larger than the sum of its proper divisors (2945005807207).

21202111010201 is a wasteful number, since it uses less digits than its factorization.

21202111010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41345332.

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

Adding to 21202111010201 its reverse (10201011120212), we get a palindrome (31403122130413).

The spelling of 21202111010201 in words is "twenty-one trillion, two hundred two billion, one hundred eleven million, ten thousand, two hundred one".