12121221101202 has 48 divisors (see below), whose sum is σ = 26626717754208. Its totient is φ = 3984413872320.

The previous prime is 12121221101189. The next prime is 12121221101219. The reversal of 12121221101202 is 20210112212121.

12121221101202 is a `hidden beast` number, since 121 + 21 + 221 + 101 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7407177 + ... + 8894307.

It is an arithmetic number, because the mean of its divisors is an integer number (554723286546).

Almost surely, 2^{12121221101202} is an apocalyptic number.

12121221101202 is an abundant number, since it is smaller than the sum of its proper divisors (14505496653006).

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

12121221101202 is a wasteful number, since it uses less digits than its factorization.

12121221101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493415 (or 1493412 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12121221101202 its reverse (20210112212121), we get a palindrome (32331333313323).

The spelling of 12121221101202 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, two hundred two".