10021131412 has 6 divisors (see below), whose sum is σ = 17536979978. Its totient is φ = 5010565704.

The previous prime is 10021131397. The next prime is 10021131413. The reversal of 10021131412 is 21413112001.

It can be written as a sum of positive squares in only one way, i.e., 10018808836 + 2322576 = 100094^2 + 1524^2 .

It is a super-2 number, since 2×10021131412² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021131413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252641423 + ... + 1252641430.

Almost surely, 2^10021131412 is an apocalyptic number.

It is an amenable number.

10021131412 is a deficient number, since it is larger than the sum of its proper divisors (7515848566).

10021131412 is a wasteful number, since it uses less digits than its factorization.

10021131412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505282857 (or 2505282855 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10021131412 its reverse (21413112001), we get a palindrome (31434243413).

The spelling of 10021131412 in words is "ten billion, twenty-one million, one hundred thirty-one thousand, four hundred twelve".