12121022021202 has 96 divisors (see below), whose sum is σ = 27401212368000. Its totient is φ = 3971579011488.

The previous prime is 12121022021177. The next prime is 12121022021219. The reversal of 12121022021202 is 20212022012121.

It is a happy number.

12121022021202 is a `hidden beast` number, since 1 + 21 + 210 + 220 + 212 + 0 + 2 = 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 47 ways as a sum of consecutive naturals, for example, 73947328 + ... + 74111060.

It is an arithmetic number, because the mean of its divisors is an integer number (285429295500).

Almost surely, 2^{12121022021202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12121022021202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13700606184000).

12121022021202 is an abundant number, since it is smaller than the sum of its proper divisors (15280190346798).

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

12121022021202 is a wasteful number, since it uses less digits than its factorization.

12121022021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164109 (or 164020 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12121022021202 its reverse (20212022012121), we get a palindrome (32333044033323).

The spelling of 12121022021202 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, twenty-one thousand, two hundred two".