202210122212121 has 16 divisors (see below), whose sum is σ = 274704220264320. Its totient is φ = 132261454241280.

The previous prime is 202210122212053. The next prime is 202210122212143. The reversal of 202210122212121 is 121212221012202.

It is not a de Polignac number, because 202210122212121 - 2²⁷ = 202209987994393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202210122212171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3457740 + ... + 20405298.

It is an arithmetic number, because the mean of its divisors is an integer number (17169013766520).

Almost surely, 2^{202210122212121} is an apocalyptic number.

It is an amenable number.

202210122212121 is a deficient number, since it is larger than the sum of its proper divisors (72494098052199).

202210122212121 is a wasteful number, since it uses less digits than its factorization.

202210122212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17022656.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202210122212121 its reverse (121212221012202), we get a palindrome (323422343224323).

The spelling of 202210122212121 in words is "two hundred two trillion, two hundred ten billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".