10121321201 has 4 divisors (see below), whose sum is σ = 10221532404. Its totient is φ = 10021110000.

The previous prime is 10121321191. The next prime is 10121321219. The reversal of 10121321201 is 10212312101.

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 4868550625 + 5252770576 = 69775^2 + 72476^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121321201 - 2⁶ = 10121321137 is a prime.

It is a super-2 number, since 2×10121321201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121321801) 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, 50105450 + ... + 50105651.

It is an arithmetic number, because the mean of its divisors is an integer number (2555383101).

Almost surely, 2^10121321201 is an apocalyptic number.

It is an amenable number.

10121321201 is a deficient number, since it is larger than the sum of its proper divisors (100211203).

10121321201 is a wasteful number, since it uses less digits than its factorization.

10121321201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100211202.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10121321201 its reverse (10212312101), we get a palindrome (20333633302).

The spelling of 10121321201 in words is "ten billion, one hundred twenty-one million, three hundred twenty-one thousand, two hundred one".