121222121021102 has 16 divisors (see below), whose sum is σ = 186063069149232. Its totient is φ = 59201116289280.

The previous prime is 121222121021077. The next prime is 121222121021153. The reversal of 121222121021102 is 201120121222121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8964452 + ... + 17966792.

It is an arithmetic number, because the mean of its divisors is an integer number (11628941821827).

Almost surely, 2^{121222121021102} is an apocalyptic number.

121222121021102 is a deficient number, since it is larger than the sum of its proper divisors (64840948128130).

121222121021102 is a wasteful number, since it uses less digits than its factorization.

121222121021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158963.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121222121021102 its reverse (201120121222121), we get a palindrome (322342242243223).

The spelling of 121222121021102 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, one hundred two".