1212102010020 has 48 divisors (see below), whose sum is σ = 3702420687168. Its totient is φ = 293842911360.

The previous prime is 1212102010013. The next prime is 1212102010037. The reversal of 1212102010020 is 200102012121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212102009978 and 1212102010005.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 918258439 + ... + 918259758.

It is an arithmetic number, because the mean of its divisors is an integer number (77133764316).

Almost surely, 2^{1212102010020} is an apocalyptic number.

1212102010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212102010020 is an abundant number, since it is smaller than the sum of its proper divisors (2490318677148).

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

1212102010020 is a wasteful number, since it uses less digits than its factorization.

1212102010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836518220 (or 1836518218 counting only the distinct ones).

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

Adding to 1212102010020 its reverse (200102012121), we get a palindrome (1412204022141).

The spelling of 1212102010020 in words is "one trillion, two hundred twelve billion, one hundred two million, ten thousand, twenty".