122000002121 has 4 divisors (see below), whose sum is σ = 129176472852. Its totient is φ = 114823531392.

The previous prime is 122000002099. The next prime is 122000002127. The reversal of 122000002121 is 121200000221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44041219600 + 77958782521 = 209860^2 + 279211^2 .

It is not a de Polignac number, because 122000002121 - 2⁶ = 122000002057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122000002127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3588235340 + ... + 3588235373.

It is an arithmetic number, because the mean of its divisors is an integer number (32294118213).

Almost surely, 2^122000002121 is an apocalyptic number.

It is an amenable number.

122000002121 is a deficient number, since it is larger than the sum of its proper divisors (7176470731).

122000002121 is an equidigital number, since it uses as much as digits as its factorization.

122000002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176470730.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122000002121 its reverse (121200000221), we get a palindrome (243200002342).

The spelling of 122000002121 in words is "one hundred twenty-two billion, two thousand, one hundred twenty-one".