121222211111011 has 8 divisors (see below), whose sum is σ = 121973236947360. Its totient is φ = 120471763659072.

The previous prime is 121222211110993. The next prime is 121222211111021. The reversal of 121222211111011 is 110111112222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-121222211111011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121222211111011.

It is not an unprimeable number, because it can be changed into a prime (121222211111021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144175626 + ... + 145013983.

It is an arithmetic number, because the mean of its divisors is an integer number (15246654618420).

Almost surely, 2^{121222211111011} is an apocalyptic number.

121222211111011 is a deficient number, since it is larger than the sum of its proper divisors (751025836349).

121222211111011 is a wasteful number, since it uses less digits than its factorization.

121222211111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289192205.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121222211111011 its reverse (110111112222121), we get a palindrome (231333323333132).

The spelling of 121222211111011 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, eleven".