102021122101 has 4 divisors (see below), whose sum is σ = 102347068492. Its totient is φ = 101695175712.

The previous prime is 102021122089. The next prime is 102021122167. The reversal of 102021122101 is 101221120201.

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 28728555025 + 73292567076 = 169495^2 + 270726^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021122101 - 2¹⁷ = 102020991029 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 (102021192101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162972726 + ... + 162973351.

It is an arithmetic number, because the mean of its divisors is an integer number (25586767123).

Almost surely, 2^102021122101 is an apocalyptic number.

It is an amenable number.

102021122101 is a deficient number, since it is larger than the sum of its proper divisors (325946391).

102021122101 is an equidigital number, since it uses as much as digits as its factorization.

102021122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325946390.

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

Adding to 102021122101 its reverse (101221120201), we get a palindrome (203242242302).

The spelling of 102021122101 in words is "one hundred two billion, twenty-one million, one hundred twenty-two thousand, one hundred one".