122111001121021 has 16 divisors (see below), whose sum is σ = 137652252581376. Its totient is φ = 107429032956000.

The previous prime is 122111001121019. The next prime is 122111001121063. The reversal of 122111001121021 is 120121100111221.

It is not a de Polignac number, because 122111001121021 - 2¹ = 122111001121019 is a prime.

It is a super-2 number, since 2×122111001121021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122111001120986 and 122111001121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111001121001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185986960 + ... + 186642361.

It is an arithmetic number, because the mean of its divisors is an integer number (8603265786336).

Almost surely, 2^{122111001121021} is an apocalyptic number.

122111001121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122111001121021 is a deficient number, since it is larger than the sum of its proper divisors (15541251460355).

122111001121021 is an frugal number, since it uses more digits than its factorization.

122111001121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372629425 (or 372629363 counting only the distinct ones).

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

Adding to 122111001121021 its reverse (120121100111221), we get a palindrome (242232101232242).

The spelling of 122111001121021 in words is "one hundred twenty-two trillion, one hundred eleven billion, one million, one hundred twenty-one thousand, twenty-one".