121220021010012 has 24 divisors (see below), whose sum is σ = 282847155222912. Its totient is φ = 40406610879600.

The previous prime is 121220021009957. The next prime is 121220021010073. The reversal of 121220021010012 is 210010120022121.

It is a junction number, because it is equal to n+sod(n) for n = 121220021009973 and 121220021010000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555087 + ... + 15580377.

It is an arithmetic number, because the mean of its divisors is an integer number (11785298134288).

Almost surely, 2^{121220021010012} is an apocalyptic number.

121220021010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121220021010012 is an abundant number, since it is smaller than the sum of its proper divisors (161627134212900).

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

121220021010012 is a wasteful number, since it uses less digits than its factorization.

121220021010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15697609 (or 15697607 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121220021010012 its reverse (210010120022121), we get a palindrome (331230141032133).

The spelling of 121220021010012 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty-one million, ten thousand, twelve".