1121260402531 has 4 divisors (see below), whose sum is σ = 1121267190600. Its totient is φ = 1121253614464.

The previous prime is 1121260402529. The next prime is 1121260402547. The reversal of 1121260402531 is 1352040621211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121260402531 - 2¹ = 1121260402529 is a prime.

It is a super-2 number, since 2×1121260402531² (a number of 25 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 1121260402531.

It is not an unprimeable number, because it can be changed into a prime (1121260408531) 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 3 ways as a sum of consecutive naturals, for example, 3139921 + ... + 3478738.

It is an arithmetic number, because the mean of its divisors is an integer number (280316797650).

Almost surely, 2^{1121260402531} is an apocalyptic number.

1121260402531 is a deficient number, since it is larger than the sum of its proper divisors (6788069).

1121260402531 is an equidigital number, since it uses as much as digits as its factorization.

1121260402531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788068.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 1121260402531 in words is "one trillion, one hundred twenty-one billion, two hundred sixty million, four hundred two thousand, five hundred thirty-one".