101201001212221 has 4 divisors (see below), whose sum is σ = 101213293337692. Its totient is φ = 101188709086752.

The previous prime is 101201001212209. The next prime is 101201001212237. The reversal of 101201001212221 is 122212100102101.

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 66982128116121 + 34218873096100 = 8184261^2 + 5849690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101201001212221 is a prime.

It is a super-2 number, since 2×101201001212221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101201001212195 and 101201001212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201001212261) 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, 6146050386 + ... + 6146066851.

It is an arithmetic number, because the mean of its divisors is an integer number (25303323334423).

Almost surely, 2^{101201001212221} is an apocalyptic number.

It is an amenable number.

101201001212221 is a deficient number, since it is larger than the sum of its proper divisors (12292125471).

101201001212221 is an equidigital number, since it uses as much as digits as its factorization.

101201001212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12292125470.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101201001212221 its reverse (122212100102101), we get a palindrome (223413101314322).

The spelling of 101201001212221 in words is "one hundred one trillion, two hundred one billion, one million, two hundred twelve thousand, two hundred twenty-one".