221001011022211 has 12 divisors (see below), whose sum is σ = 257084625260640. Its totient is φ = 189428099530320.

The previous prime is 221001011022199. The next prime is 221001011022221. The reversal of 221001011022211 is 112220110100122.

It is not a de Polignac number, because 221001011022211 - 2⁵ = 221001011022179 is a prime.

It is a super-2 number, since 2×221001011022211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221001011022221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8897520 + ... + 22829101.

It is an arithmetic number, because the mean of its divisors is an integer number (21423718771720).

Almost surely, 2^{221001011022211} is an apocalyptic number.

221001011022211 is a deficient number, since it is larger than the sum of its proper divisors (36083614238429).

221001011022211 is a wasteful number, since it uses less digits than its factorization.

221001011022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31868794 (or 31868787 counting only the distinct ones).

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

Adding to 221001011022211 its reverse (112220110100122), we get a palindrome (333221121122333).

The spelling of 221001011022211 in words is "two hundred twenty-one trillion, one billion, eleven million, twenty-two thousand, two hundred eleven".