1022121210111 has 8 divisors (see below), whose sum is σ = 1376878056624. Its totient is φ = 674389251840.

The previous prime is 1022121210107. The next prime is 1022121210161. The reversal of 1022121210111 is 1110121212201.

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 1022121210111 - 2² = 1022121210107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121210161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756221720 + ... + 1756222301.

It is an arithmetic number, because the mean of its divisors is an integer number (172109757078).

Almost surely, 2^{1022121210111} is an apocalyptic number.

1022121210111 is a deficient number, since it is larger than the sum of its proper divisors (354756846513).

1022121210111 is an equidigital number, since it uses as much as digits as its factorization.

1022121210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512444121.

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

Adding to 1022121210111 its reverse (1110121212201), we get a palindrome (2132242422312).

The spelling of 1022121210111 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".