1122521402 has 4 divisors (see below), whose sum is σ = 1683782106. Its totient is φ = 561260700.

The previous prime is 1122521401. The next prime is 1122521453. The reversal of 1122521402 is 2041252211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041252211 = 61 ⋅33463151.

It can be written as a sum of positive squares in only one way, i.e., 939974281 + 182547121 = 30659^2 + 13511^2 .

It is not an unprimeable number, because it can be changed into a prime (1122521401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280630349 + ... + 280630352.

Almost surely, 2^1122521402 is an apocalyptic number.

1122521402 is a deficient number, since it is larger than the sum of its proper divisors (561260704).

1122521402 is an equidigital number, since it uses as much as digits as its factorization.

1122521402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561260703.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1122521402 is about 33504.0505312417. The cubic root of 1122521402 is about 1039.2775437361.

Adding to 1122521402 its reverse (2041252211), we get a palindrome (3163773613).

The spelling of 1122521402 in words is "one billion, one hundred twenty-two million, five hundred twenty-one thousand, four hundred two".