121222220212202 has 16 divisors (see below), whose sum is σ = 189742482994752. Its totient is φ = 57974819094720.

The previous prime is 121222220212157. The next prime is 121222220212207. The reversal of 121222220212202 is 202212022222121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (121222220212207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20671103 + ... + 25879314.

It is an arithmetic number, because the mean of its divisors is an integer number (11858905187172).

Almost surely, 2^{121222220212202} is an apocalyptic number.

121222220212202 is a deficient number, since it is larger than the sum of its proper divisors (68520262782550).

121222220212202 is a wasteful number, since it uses less digits than its factorization.

121222220212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46607053.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 121222220212202 its reverse (202212022222121), we get a palindrome (323434242434323).

The spelling of 121222220212202 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twelve thousand, two hundred two".