2121210022 has 4 divisors (see below), whose sum is σ = 3181815036. Its totient is φ = 1060605010.

The previous prime is 2121210019. The next prime is 2121210059. The reversal of 2121210022 is 2200121212.

It is a happy number.

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

It is a super-3 number, since 3×2121210022³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121209984 and 2121210011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530302504 + ... + 530302507.

It is an arithmetic number, because the mean of its divisors is an integer number (795453759).

Almost surely, 2^2121210022 is an apocalyptic number.

2121210022 is a deficient number, since it is larger than the sum of its proper divisors (1060605014).

2121210022 is a wasteful number, since it uses less digits than its factorization.

2121210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060605013.

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

The square root of 2121210022 is about 46056.5958577053. The cubic root of 2121210022 is about 1284.8760188639.

Adding to 2121210022 its reverse (2200121212), we get a palindrome (4321331234).

The spelling of 2121210022 in words is "two billion, one hundred twenty-one million, two hundred ten thousand, twenty-two".