1022121010111 has 2 divisors, whose sum is σ = 1022121010112. Its totient is φ = 1022121010110.

The previous prime is 1022121010073. The next prime is 1022121010123. The reversal of 1022121010111 is 1110101212201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022121010111 - 2⁹ = 1022121009599 is a prime.

It is a super-4 number, since 4×1022121010111⁴ (a number of 49 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1022121010091 and 1022121010100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022121010171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511060505055 + 511060505056.

It is an arithmetic number, because the mean of its divisors is an integer number (511060505056).

Almost surely, 2^{1022121010111} is an apocalyptic number.

1022121010111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022121010111 is an equidigital number, since it uses as much as digits as its factorization.

1022121010111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1022121010111 its reverse (1110101212201), we get a palindrome (2132222222312).

The spelling of 1022121010111 in words is "one trillion, twenty-two billion, one hundred twenty-one million, ten thousand, one hundred eleven".