1102011001221 has 32 divisors (see below), whose sum is σ = 1588244015232. Its totient is φ = 675646606080.

The previous prime is 1102011001219. The next prime is 1102011001241. The reversal of 1102011001221 is 1221001102011.

It is not a de Polignac number, because 1102011001221 - 2¹ = 1102011001219 is a prime.

It is a super-2 number, since 2×1102011001221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1102011001197 and 1102011001206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102011001241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44907271 + ... + 44931803.

It is an arithmetic number, because the mean of its divisors is an integer number (49632625476).

Almost surely, 2^{1102011001221} is an apocalyptic number.

It is an amenable number.

1102011001221 is a deficient number, since it is larger than the sum of its proper divisors (486233014011).

1102011001221 is a wasteful number, since it uses less digits than its factorization.

1102011001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28773.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1102011001221 its reverse (1221001102011), we get a palindrome (2323012103232).

The spelling of 1102011001221 in words is "one trillion, one hundred two billion, eleven million, one thousand, two hundred twenty-one".