2211230011221 has 40 divisors (see below), whose sum is σ = 4118269662144. Its totient is φ = 1148690911680.

The previous prime is 2211230011169. The next prime is 2211230011261. The reversal of 2211230011221 is 1221100321122.

2211230011221 is a `hidden beast` number, since 2 + 211 + 230 + 0 + 1 + 1 + 221 = 666.

It is not a de Polignac number, because 2211230011221 - 2⁹ = 2211230010709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211230011194 and 2211230011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211230011261) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 177260880 + ... + 177273353.

Almost surely, 2^{2211230011221} is an apocalyptic number.

2211230011221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2211230011221 is a deficient number, since it is larger than the sum of its proper divisors (1907039650923).

2211230011221 is a wasteful number, since it uses less digits than its factorization.

2211230011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354534263 (or 354534254 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2211230011221 its reverse (1221100321122), we get a palindrome (3432330332343).

The spelling of 2211230011221 in words is "two trillion, two hundred eleven billion, two hundred thirty million, eleven thousand, two hundred twenty-one".