101021111201 has 4 divisors (see below), whose sum is σ = 101021812500. Its totient is φ = 101020409904.

The previous prime is 101021111183. The next prime is 101021111203. The reversal of 101021111201 is 102111120101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102111120101 = 19 ⋅5374269479.

It can be written as a sum of positive squares in 2 ways, for example, as 59730871201 + 41290240000 = 244399^2 + 203200^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021111201 - 2¹⁸ = 101020849057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101021111203) 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, 46826 + ... + 451923.

It is an arithmetic number, because the mean of its divisors is an integer number (25255453125).

Almost surely, 2^101021111201 is an apocalyptic number.

It is an amenable number.

101021111201 is a deficient number, since it is larger than the sum of its proper divisors (701299).

101021111201 is an equidigital number, since it uses as much as digits as its factorization.

101021111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701298.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101021111201 its reverse (102111120101), we get a palindrome (203132231302).

The spelling of 101021111201 in words is "one hundred one billion, twenty-one million, one hundred eleven thousand, two hundred one".