2121000122 has 8 divisors (see below), whose sum is σ = 3182035872. Its totient is φ = 1060321500.

The previous prime is 2121000113. The next prime is 2121000127. The reversal of 2121000122 is 2210001212.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (2121000127) 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, 73904 + ... + 98507.

It is an arithmetic number, because the mean of its divisors is an integer number (397754484).

Almost surely, 2^2121000122 is an apocalyptic number.

2121000122 is a deficient number, since it is larger than the sum of its proper divisors (1061035750).

2121000122 is a wasteful number, since it uses less digits than its factorization.

2121000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178564.

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

The square root of 2121000122 is about 46054.3170832008. The cubic root of 2121000122 is about 1284.8336367062.

Adding to 2121000122 its reverse (2210001212), we get a palindrome (4331001334).

The spelling of 2121000122 in words is "two billion, one hundred twenty-one million, one hundred twenty-two", and thus it is an aban number.