22222220002121 has 8 divisors (see below), whose sum is σ = 23265473374080. Its totient is φ = 21197431291792.

The previous prime is 22222220002091. The next prime is 22222220002127. The reversal of 22222220002121 is 12120002222222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22222220002121 - 2⁶ = 22222220002057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222220002093 and 22222220002102.

It is not an unprimeable number, because it can be changed into a prime (22222220002127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4616162945 + ... + 4616167758.

It is an arithmetic number, because the mean of its divisors is an integer number (2908184171760).

Almost surely, 2^{22222220002121} is an apocalyptic number.

It is an amenable number.

22222220002121 is a deficient number, since it is larger than the sum of its proper divisors (1043253371959).

22222220002121 is an equidigital number, since it uses as much as digits as its factorization.

22222220002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232330815.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22222220002121 its reverse (12120002222222), we get a palindrome (34342222224343).

The spelling of 22222220002121 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty million, two thousand, one hundred twenty-one".