12020121011210 has 16 divisors (see below), whose sum is σ = 23300542268136. Its totient is φ = 4438198527168.

The previous prime is 12020121011203. The next prime is 12020121011219. The reversal of 12020121011210 is 1211012102021.

It can be written as a sum of positive squares in 4 ways, for example, as 9838642228921 + 2181478782289 = 3136661^2 + 1476983^2 .

It is a super-2 number, since 2×12020121011210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12020121011219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46231234529 + ... + 46231234788.

Almost surely, 2^{12020121011210} is an apocalyptic number.

12020121011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020121011210 is a deficient number, since it is larger than the sum of its proper divisors (11280421256926).

12020121011210 is a wasteful number, since it uses less digits than its factorization.

12020121011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92462469337.

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

Adding to 12020121011210 its reverse (1211012102021), we get a palindrome (13231133113231).

The spelling of 12020121011210 in words is "twelve trillion, twenty billion, one hundred twenty-one million, eleven thousand, two hundred ten".