122111202100101 has 4 divisors (see below), whose sum is σ = 162814936133472. Its totient is φ = 81407468066732.

The previous prime is 122111202100079. The next prime is 122111202100103. The reversal of 122111202100101 is 101001202111221.

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 a cyclic number.

It is not a de Polignac number, because 122111202100101 - 2⁶ = 122111202100037 is a prime.

It is a super-2 number, since 2×122111202100101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111202100103) 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, 20351867016681 + ... + 20351867016686.

It is an arithmetic number, because the mean of its divisors is an integer number (40703734033368).

Almost surely, 2^{122111202100101} is an apocalyptic number.

It is an amenable number.

122111202100101 is a deficient number, since it is larger than the sum of its proper divisors (40703734033371).

122111202100101 is an equidigital number, since it uses as much as digits as its factorization.

122111202100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40703734033370.

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

Adding to 122111202100101 its reverse (101001202111221), we get a palindrome (223112404211322).

The spelling of 122111202100101 in words is "one hundred twenty-two trillion, one hundred eleven billion, two hundred two million, one hundred thousand, one hundred one".