1101212221201 has 16 divisors (see below), whose sum is σ = 1109556564480. Its totient is φ = 1092895364160.

The previous prime is 1101212221181. The next prime is 1101212221243. The reversal of 1101212221201 is 1021222121011.

It is a cyclic number.

It is not a de Polignac number, because 1101212221201 - 2¹¹ = 1101212219153 is a prime.

It is a super-2 number, since 2×1101212221201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101212221271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212217915 + ... + 212223103.

It is an arithmetic number, because the mean of its divisors is an integer number (69347285280).

Almost surely, 2^{1101212221201} is an apocalyptic number.

It is an amenable number.

1101212221201 is a deficient number, since it is larger than the sum of its proper divisors (8344343279).

1101212221201 is a wasteful number, since it uses less digits than its factorization.

1101212221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536.

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

Adding to 1101212221201 its reverse (1021222121011), we get a palindrome (2122434342212).

The spelling of 1101212221201 in words is "one trillion, one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred one".