1321023132211 has 4 divisors (see below), whose sum is σ = 1378458920592. Its totient is φ = 1263587343832.

The previous prime is 1321023132151. The next prime is 1321023132217. The reversal of 1321023132211 is 1122313201231.

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 1321023132211 - 2¹⁵ = 1321023099443 is a prime.

It is a super-2 number, since 2×1321023132211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321023132217) 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, 28717894156 + ... + 28717894201.

It is an arithmetic number, because the mean of its divisors is an integer number (344614730148).

Almost surely, 2^{1321023132211} is an apocalyptic number.

1321023132211 is a deficient number, since it is larger than the sum of its proper divisors (57435788381).

1321023132211 is an equidigital number, since it uses as much as digits as its factorization.

1321023132211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57435788380.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1321023132211 its reverse (1122313201231), we get a palindrome (2443336333442).

The spelling of 1321023132211 in words is "one trillion, three hundred twenty-one billion, twenty-three million, one hundred thirty-two thousand, two hundred eleven".