1011122110221 has 8 divisors (see below), whose sum is σ = 1358454133344. Its totient is φ = 668935746960.

The previous prime is 1011122110127. The next prime is 1011122110223. The reversal of 1011122110221 is 1220112211101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011122110221 - 2⁷ = 1011122110093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011122110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011122110223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286414506 + ... + 1286415291.

It is an arithmetic number, because the mean of its divisors is an integer number (169806766668).

Almost surely, 2^{1011122110221} is an apocalyptic number.

It is an amenable number.

1011122110221 is a deficient number, since it is larger than the sum of its proper divisors (347332023123).

1011122110221 is a wasteful number, since it uses less digits than its factorization.

1011122110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572829931.

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

Adding to 1011122110221 its reverse (1220112211101), we get a palindrome (2231234321322).

The spelling of 1011122110221 in words is "one trillion, eleven billion, one hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".