122420540001 has 4 divisors (see below), whose sum is σ = 163227386672. Its totient is φ = 81613693332.

The previous prime is 122420539993. The next prime is 122420540059. The reversal of 122420540001 is 100045024221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100045024221 = 3 ⋅33348341407.

It is not a de Polignac number, because 122420540001 - 2³ = 122420539993 is a prime.

It is a super-2 number, since 2×122420540001² (a number of 23 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 122420540001.

It is not an unprimeable number, because it can be changed into a prime (122420540101) 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, 20403423331 + ... + 20403423336.

It is an arithmetic number, because the mean of its divisors is an integer number (40806846668).

Almost surely, 2^122420540001 is an apocalyptic number.

It is an amenable number.

122420540001 is a deficient number, since it is larger than the sum of its proper divisors (40806846671).

122420540001 is an equidigital number, since it uses as much as digits as its factorization.

122420540001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40806846670.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 122420540001 its reverse (100045024221), we get a palindrome (222465564222).

The spelling of 122420540001 in words is "one hundred twenty-two billion, four hundred twenty million, five hundred forty thousand, one".