121222131201111 has 16 divisors (see below), whose sum is σ = 161706923490528. Its totient is φ = 80776047744000.

The previous prime is 121222131201079. The next prime is 121222131201113. The reversal of 121222131201111 is 111102131222121.

It is not a de Polignac number, because 121222131201111 - 2⁵ = 121222131201079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222131201113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558732625 + ... + 558949541.

It is an arithmetic number, because the mean of its divisors is an integer number (10106682718158).

Almost surely, 2^{121222131201111} is an apocalyptic number.

121222131201111 is a deficient number, since it is larger than the sum of its proper divisors (40484792289417).

121222131201111 is a wasteful number, since it uses less digits than its factorization.

121222131201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305282.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 121222131201111 its reverse (111102131222121), we get a palindrome (232324262423232).

The spelling of 121222131201111 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred thirty-one million, two hundred one thousand, one hundred eleven".