12021100121210 has 8 divisors (see below), whose sum is σ = 21637980218196. Its totient is φ = 4808440048480.

The previous prime is 12021100121203. The next prime is 12021100121221. The reversal of 12021100121210 is 1212100112021.

It can be written as a sum of positive squares in 2 ways, for example, as 11888628144121 + 132471977089 = 3447989^2 + 363967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601055006051 + ... + 601055006070.

Almost surely, 2^{12021100121210} is an apocalyptic number.

12021100121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021100121210 is a deficient number, since it is larger than the sum of its proper divisors (9616880096986).

12021100121210 is a wasteful number, since it uses less digits than its factorization.

12021100121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202110012128.

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

Adding to 12021100121210 its reverse (1212100112021), we get a palindrome (13233200233231).

The spelling of 12021100121210 in words is "twelve trillion, twenty-one billion, one hundred million, one hundred twenty-one thousand, two hundred ten".