1001102011221 has 16 divisors (see below), whose sum is σ = 1458934737344. Its totient is φ = 606867807744.

The previous prime is 1001102011163. The next prime is 1001102011243. The reversal of 1001102011221 is 1221102011001.

1001102011221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1001102011221 - 2¹³ = 1001102003029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001102011197 and 1001102011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001102011291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191559196 + ... + 191564421.

It is an arithmetic number, because the mean of its divisors is an integer number (91183421084).

Almost surely, 2^{1001102011221} is an apocalyptic number.

It is an amenable number.

1001102011221 is a deficient number, since it is larger than the sum of its proper divisors (457832726123).

1001102011221 is a wasteful number, since it uses less digits than its factorization.

1001102011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383123700.

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

Adding to 1001102011221 its reverse (1221102011001), we get a palindrome (2222204022222).

The spelling of 1001102011221 in words is "one trillion, one billion, one hundred two million, eleven thousand, two hundred twenty-one".