10131212211021 has 12 divisors (see below), whose sum is σ = 15964334393280. Its totient is φ = 6140128612680.

The previous prime is 10131212211011. The next prime is 10131212211067. The reversal of 10131212211021 is 12011221213101.

It is a happy number.

10131212211021 is a `hidden beast` number, since 101 + 312 + 1 + 221 + 10 + 21 = 666.

It is not a de Polignac number, because 10131212211021 - 2¹³ = 10131212202829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10131212210985 and 10131212211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131212211011) 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 11 ways as a sum of consecutive naturals, for example, 51167738341 + ... + 51167738538.

It is an arithmetic number, because the mean of its divisors is an integer number (1330361199440).

Almost surely, 2^{10131212211021} is an apocalyptic number.

10131212211021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10131212211021 is a deficient number, since it is larger than the sum of its proper divisors (5833122182259).

10131212211021 is a wasteful number, since it uses less digits than its factorization.

10131212211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102335476896 (or 102335476893 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 10131212211021 its reverse (12011221213101), we get a palindrome (22142433424122).

The spelling of 10131212211021 in words is "ten trillion, one hundred thirty-one billion, two hundred twelve million, two hundred eleven thousand, twenty-one".