10521143261 has 16 divisors (see below), whose sum is σ = 10825094016. Its totient is φ = 10221596736.

The previous prime is 10521143257. The next prime is 10521143371. The reversal of 10521143261 is 16234112501.

It is a cyclic number.

It is not a de Polignac number, because 10521143261 - 2² = 10521143257 is a prime.

It is a super-2 number, since 2×10521143261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10521143261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521143231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2409266 + ... + 2413628.

It is an arithmetic number, because the mean of its divisors is an integer number (676568376).

Almost surely, 2^10521143261 is an apocalyptic number.

It is an amenable number.

10521143261 is a deficient number, since it is larger than the sum of its proper divisors (303950755).

10521143261 is a wasteful number, since it uses less digits than its factorization.

10521143261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 10521143261 its reverse (16234112501), we get a palindrome (26755255762).

The spelling of 10521143261 in words is "ten billion, five hundred twenty-one million, one hundred forty-three thousand, two hundred sixty-one".