2121122002 has 8 divisors (see below), whose sum is σ = 3291396300. Its totient is φ = 1023989904.

The previous prime is 2121121969. The next prime is 2121122009. The reversal of 2121122002 is 2002211212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2114252361 + 6869641 = 45981^2 + 2621^2 .

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 (2121122009) 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, 18285477 + ... + 18285592.

Almost surely, 2^2121122002 is an apocalyptic number.

2121122002 is a deficient number, since it is larger than the sum of its proper divisors (1170274298).

2121122002 is a wasteful number, since it uses less digits than its factorization.

2121122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36571100.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2121122002 is about 46055.6402843343. The cubic root of 2121122002 is about 1284.8582465625.

Adding to 2121122002 its reverse (2002211212), we get a palindrome (4123333214).

The spelling of 2121122002 in words is "two billion, one hundred twenty-one million, one hundred twenty-two thousand, two".