121230112212 has 120 divisors (see below), whose sum is σ = 360762316992. Its totient is φ = 35139139200.

The previous prime is 121230112181. The next prime is 121230112217. The reversal of 121230112212 is 212211032121.

It is a super-2 number, since 2×121230112212² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230112217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 657489 + ... + 821432.

Almost surely, 2^121230112212 is an apocalyptic number.

121230112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121230112212 is an abundant number, since it is smaller than the sum of its proper divisors (239532204780).

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

121230112212 is a wasteful number, since it uses less digits than its factorization.

121230112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478971 (or 1478960 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121230112212 its reverse (212211032121), we get a palindrome (333441144333).

The spelling of 121230112212 in words is "one hundred twenty-one billion, two hundred thirty million, one hundred twelve thousand, two hundred twelve".