1122211201221 has 32 divisors (see below), whose sum is σ = 1817982887040. Its totient is φ = 678512419200.

The previous prime is 1122211201219. The next prime is 1122211201291. The reversal of 1122211201221 is 1221021122211.

1122211201221 is a `hidden beast` number, since 11 + 22 + 211 + 201 + 221 = 666.

It is not a de Polignac number, because 1122211201221 - 2¹ = 1122211201219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122211201194 and 1122211201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122211201291) 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, 4362480 + ... + 4612553.

It is an arithmetic number, because the mean of its divisors is an integer number (56811965220).

Almost surely, 2^{1122211201221} is an apocalyptic number.

1122211201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122211201221 is a deficient number, since it is larger than the sum of its proper divisors (695771685819).

1122211201221 is a wasteful number, since it uses less digits than its factorization.

1122211201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975474 (or 8975468 counting only the distinct ones).

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

Adding to 1122211201221 its reverse (1221021122211), we get a palindrome (2343232323432).

The spelling of 1122211201221 in words is "one trillion, one hundred twenty-two billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".