321221013011 has 2 divisors, whose sum is σ = 321221013012. Its totient is φ = 321221013010.

The previous prime is 321221013007. The next prime is 321221013073. The reversal of 321221013011 is 110310122123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321221013011 - 2² = 321221013007 is a prime.

It is a super-2 number, since 2×321221013011² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321221013811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160610506505 + 160610506506.

It is an arithmetic number, because the mean of its divisors is an integer number (160610506506).

Almost surely, 2^321221013011 is an apocalyptic number.

321221013011 is a deficient number, since it is larger than the sum of its proper divisors (1).

321221013011 is an equidigital number, since it uses as much as digits as its factorization.

321221013011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321221013011 its reverse (110310122123), we get a palindrome (431531135134).

The spelling of 321221013011 in words is "three hundred twenty-one billion, two hundred twenty-one million, thirteen thousand, eleven".