1011110022121 has 2 divisors, whose sum is σ = 1011110022122. Its totient is φ = 1011110022120.

The previous prime is 1011110022103. The next prime is 1011110022149. The reversal of 1011110022121 is 1212200111101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981753997225 + 29356024896 = 990835^2 + 171336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011110022121 - 2⁵ = 1011110022089 is a prime.

It is a super-3 number, since 3×1011110022121³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1011110022161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505555011060 + 505555011061.

It is an arithmetic number, because the mean of its divisors is an integer number (505555011061).

Almost surely, 2^{1011110022121} is an apocalyptic number.

It is an amenable number.

1011110022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011110022121 is an equidigital number, since it uses as much as digits as its factorization.

1011110022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011110022121 its reverse (1212200111101), we get a palindrome (2223310133222).

The spelling of 1011110022121 in words is "one trillion, eleven billion, one hundred ten million, twenty-two thousand, one hundred twenty-one".