121210122210212 has 192 divisors, whose sum is σ = 260692841041920. Its totient is φ = 48132240076800.

The previous prime is 121210122210187. The next prime is 121210122210227. The reversal of 121210122210212 is 212012221012121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18115393787 + ... + 18115400477.

It is an arithmetic number, because the mean of its divisors is an integer number (1357775213760).

Almost surely, 2^{121210122210212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121210122210212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130346420520960).

121210122210212 is an abundant number, since it is smaller than the sum of its proper divisors (139482718831708).

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

121210122210212 is a wasteful number, since it uses less digits than its factorization.

121210122210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8602 (or 8600 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121210122210212 its reverse (212012221012121), we get a palindrome (333222343222333).

The spelling of 121210122210212 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, two hundred twelve".