121200010212 has 24 divisors (see below), whose sum is σ = 282872074912. Its totient is φ = 40389710400.

The previous prime is 121200010147. The next prime is 121200010223. The reversal of 121200010212 is 212010002121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237489 + ... + 1331832.

Almost surely, 2^121200010212 is an apocalyptic number.

121200010212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121200010212 is an abundant number, since it is smaller than the sum of its proper divisors (161672064700).

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

121200010212 is a wasteful number, since it uses less digits than its factorization.

121200010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573259 (or 2573257 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121200010212 its reverse (212010002121), we get a palindrome (333210012333).

The spelling of 121200010212 in words is "one hundred twenty-one billion, two hundred million, ten thousand, two hundred twelve".