10521213142 has 16 divisors (see below), whose sum is σ = 17409978000. Its totient is φ = 4728634240.

The previous prime is 10521213103. The next prime is 10521213149. The reversal of 10521213142 is 24131212501.

It is a super-2 number, since 2×10521213142² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521213149) 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 7 ways as a sum of consecutive naturals, for example, 2684767 + ... + 2688682.

It is an arithmetic number, because the mean of its divisors is an integer number (1088123625).

Almost surely, 2^10521213142 is an apocalyptic number.

10521213142 is a deficient number, since it is larger than the sum of its proper divisors (6888764858).

10521213142 is a wasteful number, since it uses less digits than its factorization.

10521213142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373551.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 10521213142 its reverse (24131212501), we get a palindrome (34652425643).

The spelling of 10521213142 in words is "ten billion, five hundred twenty-one million, two hundred thirteen thousand, one hundred forty-two".