122100010221001 has 4 divisors (see below), whose sum is σ = 122100769629972. Its totient is φ = 122099250812032.

The previous prime is 122100010220977. The next prime is 122100010221019. The reversal of 122100010221001 is 100122010001221.

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 105457290177600 + 16642720043401 = 10269240^2 + 4079549^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100010221001 - 2¹³ = 122100010212809 is a prime.

It is a super-2 number, since 2×122100010221001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100010225001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379463260 + ... + 379784893.

It is an arithmetic number, because the mean of its divisors is an integer number (30525192407493).

Almost surely, 2^{122100010221001} is an apocalyptic number.

It is an amenable number.

122100010221001 is a deficient number, since it is larger than the sum of its proper divisors (759408971).

122100010221001 is an equidigital number, since it uses as much as digits as its factorization.

122100010221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759408970.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122100010221001 its reverse (100122010001221), we get a palindrome (222222020222222).

The spelling of 122100010221001 in words is "one hundred twenty-two trillion, one hundred billion, ten million, two hundred twenty-one thousand, one".