121222121202 has 288 divisors, whose sum is σ = 340235520768. Its totient is φ = 30509167104.

The previous prime is 121222121201. The next prime is 121222121213. The reversal of 121222121202 is 202121222121.

It is a happy number.

121222121202 is a `hidden beast` number, since 121 + 222 + 121 + 202 = 666.

121222121202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (121222121201) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 41756083 + ... + 41758985.

It is an arithmetic number, because the mean of its divisors is an integer number (1181373336).

Almost surely, 2^121222121202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121222121202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170117760384).

121222121202 is an abundant number, since it is smaller than the sum of its proper divisors (219013399566).

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

121222121202 is a wasteful number, since it uses less digits than its factorization.

121222121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034 (or 3018 counting only the distinct ones).

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

Adding to 121222121202 its reverse (202121222121), we get a palindrome (323343343323).

It can be divided in two parts, 121222121 and 202, that multiplied together give a palindrome (24486868442).

The spelling of 121222121202 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred two".