122011022122221 has 4 divisors (see below), whose sum is σ = 162681362829632. Its totient is φ = 81340681414812.

The previous prime is 122011022122201. The next prime is 122011022122243. The reversal of 122011022122221 is 122221220110221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122011022122221 - 2¹⁴ = 122011022105837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011022122201) 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, 20335170353701 + ... + 20335170353706.

It is an arithmetic number, because the mean of its divisors is an integer number (40670340707408).

Almost surely, 2^{122011022122221} is an apocalyptic number.

It is an amenable number.

122011022122221 is a deficient number, since it is larger than the sum of its proper divisors (40670340707411).

122011022122221 is an equidigital number, since it uses as much as digits as its factorization.

122011022122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40670340707410.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122011022122221 its reverse (122221220110221), we get a palindrome (244232242232442).

The spelling of 122011022122221 in words is "one hundred twenty-two trillion, eleven billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".