21202211121201 has 16 divisors (see below), whose sum is σ = 34266199792320. Its totient is φ = 12849824921760.

The previous prime is 21202211121187. The next prime is 21202211121227. The reversal of 21202211121201 is 10212111220212.

21202211121201 is a `hidden beast` number, since 2 + 120 + 221 + 1 + 121 + 201 = 666.

It is not a de Polignac number, because 21202211121201 - 2⁹ = 21202211120689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202211121271) 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, 35693957820 + ... + 35693958413.

It is an arithmetic number, because the mean of its divisors is an integer number (2141637487020).

Almost surely, 2^{21202211121201} is an apocalyptic number.

It is an amenable number.

21202211121201 is a deficient number, since it is larger than the sum of its proper divisors (13063988671119).

21202211121201 is a wasteful number, since it uses less digits than its factorization.

21202211121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71387916253 (or 71387916247 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21202211121201 its reverse (10212111220212), we get a palindrome (31414322341413).

The spelling of 21202211121201 in words is "twenty-one trillion, two hundred two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred one".