1101022111221 has 4 divisors (see below), whose sum is σ = 1468029481632. Its totient is φ = 734014740812.

The previous prime is 1101022111201. The next prime is 1101022111223. The reversal of 1101022111221 is 1221112201011.

It is a happy number.

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 1101022111221 - 2⁹ = 1101022110709 is a prime.

It is a super-2 number, since 2×1101022111221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101022111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101022111223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183503685201 + ... + 183503685206.

It is an arithmetic number, because the mean of its divisors is an integer number (367007370408).

Almost surely, 2^{1101022111221} is an apocalyptic number.

It is an amenable number.

1101022111221 is a deficient number, since it is larger than the sum of its proper divisors (367007370411).

1101022111221 is an equidigital number, since it uses as much as digits as its factorization.

1101022111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367007370410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1101022111221 its reverse (1221112201011), we get a palindrome (2322134312232).

The spelling of 1101022111221 in words is "one trillion, one hundred one billion, twenty-two million, one hundred eleven thousand, two hundred twenty-one".