121211111022 has 16 divisors (see below), whose sum is σ = 242826940800. Its totient is φ = 40336250552.

The previous prime is 121211111017. The next prime is 121211111029. The reversal of 121211111022 is 220111112121.

It is a happy number.

121211111022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121211110992 and 121211111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211111029) 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, 16859388 + ... + 16866575.

It is an arithmetic number, because the mean of its divisors is an integer number (15176683800).

Almost surely, 2^121211111022 is an apocalyptic number.

121211111022 is an abundant number, since it is smaller than the sum of its proper divisors (121615829778).

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

121211111022 is a wasteful number, since it uses less digits than its factorization.

121211111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33726567.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121211111022 its reverse (220111112121), we get a palindrome (341322223143).

The spelling of 121211111022 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, twenty-two".