121222012200012 has 72 divisors (see below), whose sum is σ = 317938447920912. Its totient is φ = 40386080952000.

The previous prime is 121222012199987. The next prime is 121222012200019. The reversal of 121222012200012 is 210002210222121.

It is a happy number.

121222012200012 is a `hidden beast` number, since 1 + 212 + 220 + 1 + 220 + 0 + 0 + 12 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (121222012200019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30954439 + ... + 34649982.

Almost surely, 2^{121222012200012} is an apocalyptic number.

121222012200012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121222012200012 is an abundant number, since it is smaller than the sum of its proper divisors (196716435720900).

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

121222012200012 is a wasteful number, since it uses less digits than its factorization.

121222012200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65606341 (or 65606327 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222012200012 its reverse (210002210222121), we get a palindrome (331224222422133).

The spelling of 121222012200012 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, twelve million, two hundred thousand, twelve".