122122220211001 has 4 divisors (see below), whose sum is σ = 122326097040000. Its totient is φ = 121918343382004.

The previous prime is 122122220210981. The next prime is 122122220211023. The reversal of 122122220211001 is 100112022221221.

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 a cyclic number.

It is not a de Polignac number, because 122122220211001 - 2¹³ = 122122220202809 is a prime.

It is a super-2 number, since 2×122122220211001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122122220211001.

It is not an unprimeable number, because it can be changed into a prime (122122220211091) 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, 101938413601 + ... + 101938414798.

It is an arithmetic number, because the mean of its divisors is an integer number (30581524260000).

Almost surely, 2^{122122220211001} is an apocalyptic number.

It is an amenable number.

122122220211001 is a deficient number, since it is larger than the sum of its proper divisors (203876828999).

122122220211001 is an equidigital number, since it uses as much as digits as its factorization.

122122220211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203876828998.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122122220211001 its reverse (100112022221221), we get a palindrome (222234242432222).

It can be divided in two parts, 122122220 and 211001, that added together give a palindrome (122333221).

The spelling of 122122220211001 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred twenty million, two hundred eleven thousand, one".