122111221010001 has 4 divisors (see below), whose sum is σ = 162814961346672. Its totient is φ = 81407480673332.

The previous prime is 122111221009991. The next prime is 122111221010011. The reversal of 122111221010001 is 100010122111221.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (122111221009991) and next prime (122111221010011).

It is a cyclic number.

It is not a de Polignac number, because 122111221010001 - 2⁷ = 122111221009873 is a prime.

It is a super-2 number, since 2×122111221010001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122111221010011) 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, 20351870168331 + ... + 20351870168336.

It is an arithmetic number, because the mean of its divisors is an integer number (40703740336668).

Almost surely, 2^{122111221010001} is an apocalyptic number.

It is an amenable number.

122111221010001 is a deficient number, since it is larger than the sum of its proper divisors (40703740336671).

122111221010001 is an equidigital number, since it uses as much as digits as its factorization.

122111221010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40703740336670.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122111221010001 its reverse (100010122111221), we get a palindrome (222121343121222).

The spelling of 122111221010001 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, ten thousand, one".