2121120202 has 8 divisors (see below), whose sum is σ = 3194061156. Its totient is φ = 1056433152.

The previous prime is 2121120187. The next prime is 2121120203. The reversal of 2121120202 is 2020211212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1557959841 + 563160361 = 39471^2 + 23731^2 .

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

It is a super-2 number, since 2×2121120202² = 8998301822665041608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121120203) 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, 2062833 + ... + 2063860.

Almost surely, 2^2121120202 is an apocalyptic number.

2121120202 is a deficient number, since it is larger than the sum of its proper divisors (1072940954).

2121120202 is a wasteful number, since it uses less digits than its factorization.

2121120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126952.

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

The square root of 2121120202 is about 46055.6207427497. The cubic root of 2121120202 is about 1284.8578831156.

Adding to 2121120202 its reverse (2020211212), we get a palindrome (4141331414).

The spelling of 2121120202 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred two".