1022121002101 has 4 divisors (see below), whose sum is σ = 1022347289772. Its totient is φ = 1021894714432.

The previous prime is 1022121002051. The next prime is 1022121002141. The reversal of 1022121002101 is 1012001212201.

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 275194668100 + 746926334001 = 524590^2 + 864249^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022121002101 - 2⁹ = 1022121001589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121002141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113137060 + ... + 113146093.

It is an arithmetic number, because the mean of its divisors is an integer number (255586822443).

Almost surely, 2^{1022121002101} is an apocalyptic number.

It is an amenable number.

1022121002101 is a deficient number, since it is larger than the sum of its proper divisors (226287671).

1022121002101 is an equidigital number, since it uses as much as digits as its factorization.

1022121002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226287670.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1022121002101 its reverse (1012001212201), we get a palindrome (2034122214302).

The spelling of 1022121002101 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two thousand, one hundred one".