1322121011 has 4 divisors (see below), whose sum is σ = 1338856800. Its totient is φ = 1305385224.

The previous prime is 1322120977. The next prime is 1322121013. The reversal of 1322121011 is 1101212231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322121011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322121013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8367776 + ... + 8367933.

It is an arithmetic number, because the mean of its divisors is an integer number (334714200).

Almost surely, 2^1322121011 is an apocalyptic number.

1322121011 is a deficient number, since it is larger than the sum of its proper divisors (16735789).

1322121011 is an equidigital number, since it uses as much as digits as its factorization.

1322121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735788.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1322121011 is about 36360.9819861895. The cubic root of 1322121011 is about 1097.5485382476.

Adding to 1322121011 its reverse (1101212231), we get a palindrome (2423333242).

The spelling of 1322121011 in words is "one billion, three hundred twenty-two million, one hundred twenty-one thousand, eleven".