1012112220101 has 4 divisors (see below), whose sum is σ = 1012437765900. Its totient is φ = 1011786674304.

The previous prime is 1012112220089. The next prime is 1012112220109. The reversal of 1012112220101 is 1010222112101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 166357936900 + 845754283201 = 407870^2 + 919649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012112220101 - 2⁶ = 1012112220037 is a prime.

It is a super-2 number, since 2×1012112220101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112220109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162768236 + ... + 162774453.

It is an arithmetic number, because the mean of its divisors is an integer number (253109441475).

Almost surely, 2^{1012112220101} is an apocalyptic number.

It is an amenable number.

1012112220101 is a deficient number, since it is larger than the sum of its proper divisors (325545799).

1012112220101 is an equidigital number, since it uses as much as digits as its factorization.

1012112220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325545798.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1012112220101 its reverse (1010222112101), we get a palindrome (2022334332202).

The spelling of 1012112220101 in words is "one trillion, twelve billion, one hundred twelve million, two hundred twenty thousand, one hundred one".