2121210122210 has 8 divisors (see below), whose sum is σ = 3818178219996. Its totient is φ = 848484048880.

The previous prime is 2121210122191. The next prime is 2121210122249. The reversal of 2121210122210 is 122210121212.

It can be written as a sum of positive squares in 2 ways, for example, as 1944331838449 + 176878283761 = 1394393^2 + 420569^2 .

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

It is a super-3 number, since 3×2121210122210³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106060506101 + ... + 106060506120.

Almost surely, 2^{2121210122210} is an apocalyptic number.

2121210122210 is a deficient number, since it is larger than the sum of its proper divisors (1696968097786).

2121210122210 is a wasteful number, since it uses less digits than its factorization.

2121210122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212121012228.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121210122210 its reverse (122210121212), we get a palindrome (2243420243422).

The spelling of 2121210122210 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, two hundred ten".