122212122001 has 4 divisors (see below), whose sum is σ = 129401070372. Its totient is φ = 115023173632.

The previous prime is 122212121981. The next prime is 122212122047. The reversal of 122212122001 is 100221212221.

It is a happy number.

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 46688837776 + 75523284225 = 216076^2 + 274815^2 .

It is a cyclic number.

It is not a de Polignac number, because 122212122001 - 2¹⁹ = 122211597713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122212122401) 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, 3594474160 + ... + 3594474193.

It is an arithmetic number, because the mean of its divisors is an integer number (32350267593).

Almost surely, 2^122212122001 is an apocalyptic number.

It is an amenable number.

122212122001 is a deficient number, since it is larger than the sum of its proper divisors (7188948371).

122212122001 is an equidigital number, since it uses as much as digits as its factorization.

122212122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188948370.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122212122001 its reverse (100221212221), we get a palindrome (222433334222).

The spelling of 122212122001 in words is "one hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, one".