1110101122221 has 64 divisors (see below), whose sum is σ = 1980995240448. Its totient is φ = 536209072128.

The previous prime is 1110101122219. The next prime is 1110101122237. The reversal of 1110101122221 is 1222211010111.

It is a happy number.

It is not a de Polignac number, because 1110101122221 - 2¹ = 1110101122219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1110101122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110101122121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3060640 + ... + 3404073.

It is an arithmetic number, because the mean of its divisors is an integer number (30953050632).

Almost surely, 2^{1110101122221} is an apocalyptic number.

It is an amenable number.

1110101122221 is a deficient number, since it is larger than the sum of its proper divisors (870894118227).

1110101122221 is a wasteful number, since it uses less digits than its factorization.

1110101122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464790.

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

Adding to 1110101122221 its reverse (1222211010111), we get a palindrome (2332312132332).

The spelling of 1110101122221 in words is "one trillion, one hundred ten billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-one".