2101531445201 has 4 divisors (see below), whose sum is σ = 2150404269552. Its totient is φ = 2052658620852.

The previous prime is 2101531445137. The next prime is 2101531445203. The reversal of 2101531445201 is 1025441351012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2101531445201 - 2⁶ = 2101531445137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101531445203) 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, 24436412111 + ... + 24436412196.

It is an arithmetic number, because the mean of its divisors is an integer number (537601067388).

Almost surely, 2^{2101531445201} is an apocalyptic number.

It is an amenable number.

2101531445201 is a deficient number, since it is larger than the sum of its proper divisors (48872824351).

2101531445201 is an equidigital number, since it uses as much as digits as its factorization.

2101531445201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48872824350.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 2101531445201 its reverse (1025441351012), we get a palindrome (3126972796213).

The spelling of 2101531445201 in words is "two trillion, one hundred one billion, five hundred thirty-one million, four hundred forty-five thousand, two hundred one".