1326263121 has 24 divisors (see below), whose sum is σ = 1965075840. Its totient is φ = 861451200.

The previous prime is 1326263101. The next prime is 1326263131. The reversal of 1326263121 is 1213626231.

1326263121 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 2 + 631 + 21 = 666.

It is not a de Polignac number, because 1326263121 - 2²² = 1322068817 is a prime.

It is a super-2 number, since 2×1326263121² = 3517947732249321282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1326263101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337156 + ... + 341066.

It is an arithmetic number, because the mean of its divisors is an integer number (81878160).

Almost surely, 2^1326263121 is an apocalyptic number.

It is an amenable number.

1326263121 is a deficient number, since it is larger than the sum of its proper divisors (638812719).

1326263121 is a wasteful number, since it uses less digits than its factorization.

1326263121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877 (or 4874 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1326263121 is about 36417.8956146563. The cubic root of 1326263121 is about 1098.6935235603.

Adding to 1326263121 its reverse (1213626231), we get a palindrome (2539889352).

The spelling of 1326263121 in words is "one billion, three hundred twenty-six million, two hundred sixty-three thousand, one hundred twenty-one".