120421224012 has 24 divisors (see below), whose sum is σ = 288576988336. Its totient is φ = 39055531968.

The previous prime is 120421223981. The next prime is 120421224061. The reversal of 120421224012 is 210422124021.

It is a super-2 number, since 2×120421224012² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120421224012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135609043 + ... + 135609930.

Almost surely, 2^120421224012 is an apocalyptic number.

120421224012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120421224012 is an abundant number, since it is smaller than the sum of its proper divisors (168155764324).

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

120421224012 is a wasteful number, since it uses less digits than its factorization.

120421224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271219017 (or 271219015 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 120421224012 its reverse (210422124021), we get a palindrome (330843348033).

Subtracting 120421224012 from its reverse (210422124021), we obtain a palindrome (90000900009).

The spelling of 120421224012 in words is "one hundred twenty billion, four hundred twenty-one million, two hundred twenty-four thousand, twelve".