212101011200221 has 32 divisors (see below), whose sum is σ = 251611831231488. Its totient is φ = 176253809034240.

The previous prime is 212101011200167. The next prime is 212101011200279. The reversal of 212101011200221 is 122002110101212.

It is a cyclic number.

It is not a de Polignac number, because 212101011200221 - 2²⁷ = 212100876982493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212101011200195 and 212101011200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101011290221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12174100 + ... + 23925106.

It is an arithmetic number, because the mean of its divisors is an integer number (7862869725984).

Almost surely, 2^{212101011200221} is an apocalyptic number.

It is an amenable number.

212101011200221 is a deficient number, since it is larger than the sum of its proper divisors (39510820031267).

212101011200221 is a wasteful number, since it uses less digits than its factorization.

212101011200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11752261.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212101011200221 its reverse (122002110101212), we get a palindrome (334103121301433).

The spelling of 212101011200221 in words is "two hundred twelve trillion, one hundred one billion, eleven million, two hundred thousand, two hundred twenty-one".