10121201221031 has 4 divisors (see below), whose sum is σ = 10121397279432. Its totient is φ = 10121005162632.

The previous prime is 10121201221007. The next prime is 10121201221051. The reversal of 10121201221031 is 13012210212101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10121201221031 - 2⁶ = 10121201220967 is a prime.

It is a super-2 number, since 2×10121201221031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121201221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97951745 + ... + 98055018.

It is an arithmetic number, because the mean of its divisors is an integer number (2530349319858).

Almost surely, 2^{10121201221031} is an apocalyptic number.

10121201221031 is a deficient number, since it is larger than the sum of its proper divisors (196058401).

10121201221031 is an equidigital number, since it uses as much as digits as its factorization.

10121201221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196058400.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10121201221031 its reverse (13012210212101), we get a palindrome (23133411433132).

The spelling of 10121201221031 in words is "ten trillion, one hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, thirty-one".