12020111021210 has 64 divisors (see below), whose sum is σ = 22271678416800. Its totient is φ = 4668735052800.

The previous prime is 12020111021159. The next prime is 12020111021251. The reversal of 12020111021210 is 1212011102021.

It can be written as a sum of positive squares in 16 ways, for example, as 4398663095401 + 7621447925809 = 2097299^2 + 2760697^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136403924 + ... + 136492016.

Almost surely, 2^{12020111021210} is an apocalyptic number.

12020111021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020111021210 is a deficient number, since it is larger than the sum of its proper divisors (10251567395590).

12020111021210 is a wasteful number, since it uses less digits than its factorization.

12020111021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90803.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12020111021210 its reverse (1212011102021), we get a palindrome (13232122123231).

The spelling of 12020111021210 in words is "twelve trillion, twenty billion, one hundred eleven million, twenty-one thousand, two hundred ten".