122220221211001 has 4 divisors (see below), whose sum is σ = 122220351828900. Its totient is φ = 122220090593104.

The previous prime is 122220221210977. The next prime is 122220221211037. The reversal of 122220221211001 is 100112122022221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35612536205376 + 86607685005625 = 5967624^2 + 9306325^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220221211001 - 2³⁹ = 121670465397113 is a prime.

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 122220221211001.

It is not an unprimeable number, because it can be changed into a prime (122220227211001) 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, 63895186 + ... + 65780203.

It is an arithmetic number, because the mean of its divisors is an integer number (30555087957225).

Almost surely, 2^{122220221211001} is an apocalyptic number.

It is an amenable number.

122220221211001 is a deficient number, since it is larger than the sum of its proper divisors (130617899).

122220221211001 is an equidigital number, since it uses as much as digits as its factorization.

122220221211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130617898.

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

Adding to 122220221211001 its reverse (100112122022221), we get a palindrome (222332343233222).

The spelling of 122220221211001 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, one".