221012201211 has 8 divisors (see below), whose sum is σ = 294685107024. Its totient is φ = 147340381440.

The previous prime is 221012201141. The next prime is 221012201233. The reversal of 221012201211 is 112102210122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221012201211 - 2¹⁸ = 221011939067 is a prime.

It is a super-3 number, since 3×221012201211³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (221012201411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654931 + ... + 933251.

It is an arithmetic number, because the mean of its divisors is an integer number (36835638378).

Almost surely, 2^221012201211 is an apocalyptic number.

221012201211 is a deficient number, since it is larger than the sum of its proper divisors (73672905813).

221012201211 is a wasteful number, since it uses less digits than its factorization.

221012201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543021.

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

Adding to 221012201211 its reverse (112102210122), we get a palindrome (333114411333).

The spelling of 221012201211 in words is "two hundred twenty-one billion, twelve million, two hundred one thousand, two hundred eleven".