1101012221221 has 4 divisors (see below), whose sum is σ = 1201104241344. Its totient is φ = 1000920201100.

The previous prime is 1101012221219. The next prime is 1101012221233. The reversal of 1101012221221 is 1221222101011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1101012221221 - 2¹ = 1101012221219 is a prime.

It is a super-2 number, since 2×1101012221221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101012221195 and 1101012221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101012221291) 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 3 ways as a sum of consecutive naturals, for example, 50046010045 + ... + 50046010066.

It is an arithmetic number, because the mean of its divisors is an integer number (300276060336).

Almost surely, 2^{1101012221221} is an apocalyptic number.

1101012221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101012221221 is a deficient number, since it is larger than the sum of its proper divisors (100092020123).

1101012221221 is a wasteful number, since it uses less digits than its factorization.

1101012221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100092020122.

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

Adding to 1101012221221 its reverse (1221222101011), we get a palindrome (2322234322232).

The spelling of 1101012221221 in words is "one trillion, one hundred one billion, twelve million, two hundred twenty-one thousand, two hundred twenty-one".