101210021201 has 4 divisors (see below), whose sum is σ = 101210690100. Its totient is φ = 101209352304.

The previous prime is 101210021113. The next prime is 101210021207. The reversal of 101210021201 is 102120012101.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 81202201600 + 20007819601 = 284960^2 + 141449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101210021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101210021207) 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, 12455 + ... + 450083.

It is an arithmetic number, because the mean of its divisors is an integer number (25302672525).

Almost surely, 2^101210021201 is an apocalyptic number.

It is an amenable number.

101210021201 is a deficient number, since it is larger than the sum of its proper divisors (668899).

101210021201 is an equidigital number, since it uses as much as digits as its factorization.

101210021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668898.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101210021201 its reverse (102120012101), we get a palindrome (203330033302).

It can be divided in two parts, 1012100 and 21201, that added together give a palindrome (1033301).

The spelling of 101210021201 in words is "one hundred one billion, two hundred ten million, twenty-one thousand, two hundred one".