1122521543 has 32 divisors (see below), whose sum is σ = 1400535360. Its totient is φ = 883906560.

The previous prime is 1122521483. The next prime is 1122521549. The reversal of 1122521543 is 3451252211.

It is a cyclic number.

It is not a de Polignac number, because 1122521543 - 2⁶ = 1122521479 is a prime.

It is a super-2 number, since 2×1122521543² = 2520109228998201698, which 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 (1122521549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1353653 + ... + 1354481.

It is an arithmetic number, because the mean of its divisors is an integer number (43766730).

Almost surely, 2^1122521543 is an apocalyptic number.

1122521543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1122521543 is a deficient number, since it is larger than the sum of its proper divisors (278013817).

1122521543 is a wasteful number, since it uses less digits than its factorization.

1122521543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its digits is 2400, while the sum is 26.

The square root of 1122521543 is about 33504.0526354649. The cubic root of 1122521543 is about 1039.2775872506.

Adding to 1122521543 its reverse (3451252211), we get a palindrome (4573773754).

It can be divided in two parts, 11225 and 21543, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 1122521543 in words is "one billion, one hundred twenty-two million, five hundred twenty-one thousand, five hundred forty-three".