121222221110110 has 16 divisors (see below), whose sum is σ = 231035291998416. Its totient is φ = 45636600888448.

The previous prime is 121222221110047. The next prime is 121222221110117. The reversal of 121222221110110 is 11011122222121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222221110117) 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, 356535944272 + ... + 356535944611.

It is an arithmetic number, because the mean of its divisors is an integer number (14439705749901).

Almost surely, 2^{121222221110110} is an apocalyptic number.

121222221110110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222221110110 is a deficient number, since it is larger than the sum of its proper divisors (109813070888306).

121222221110110 is a wasteful number, since it uses less digits than its factorization.

121222221110110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713071888907.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121222221110110 its reverse (11011122222121), we get a palindrome (132233343332231).

The spelling of 121222221110110 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one hundred ten".