12102121210122 has 32 divisors (see below), whose sum is σ = 26979524780160. Its totient is φ = 4021152089760.

The previous prime is 12102121210103. The next prime is 12102121210129. The reversal of 12102121210122 is 22101212120121.

12102121210122 is a `hidden beast` number, since 1 + 210 + 2 + 121 + 210 + 122 = 666.

It is a super-2 number, since 2×12102121210122² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12102121210095 and 12102121210104.

It is not an unprimeable number, because it can be changed into a prime (12102121210129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357991654 + ... + 358025457.

It is an arithmetic number, because the mean of its divisors is an integer number (843110149380).

Almost surely, 2^{12102121210122} is an apocalyptic number.

12102121210122 is an abundant number, since it is smaller than the sum of its proper divisors (14877403570038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12102121210122 is a wasteful number, since it uses less digits than its factorization.

12102121210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716017435 (or 716017429 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12102121210122 its reverse (22101212120121), we get a palindrome (34203333330243).

Subtracting 12102121210122 from its reverse (22101212120121), we obtain a palindrome (9999090909999).

The spelling of 12102121210122 in words is "twelve trillion, one hundred two billion, one hundred twenty-one million, two hundred ten thousand, one hundred twenty-two".