12220001002121 has 4 divisors (see below), whose sum is σ = 13330910184144. Its totient is φ = 11109091820100.

The previous prime is 12220001002093. The next prime is 12220001002123. The reversal of 12220001002121 is 12120010002221.

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 12220001002121 - 2⁶ = 12220001002057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220001002096 and 12220001002105.

It is not an unprimeable number, because it can be changed into a prime (12220001002123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555454590995 + ... + 555454591016.

It is an arithmetic number, because the mean of its divisors is an integer number (3332727546036).

Almost surely, 2^{12220001002121} is an apocalyptic number.

12220001002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12220001002121 is a deficient number, since it is larger than the sum of its proper divisors (1110909182023).

12220001002121 is a wasteful number, since it uses less digits than its factorization.

12220001002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110909182022.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12220001002121 its reverse (12120010002221), we get a palindrome (24340011004342).

It can be divided in two parts, 1222000100 and 2121, that added together give a palindrome (1222002221).

The spelling of 12220001002121 in words is "twelve trillion, two hundred twenty billion, one million, two thousand, one hundred twenty-one".