122111221110 has 16 divisors (see below), whose sum is σ = 293066930736. Its totient is φ = 32562992288.

The previous prime is 122111221109. The next prime is 122111221151. The reversal of 122111221110 is 11122111221.

It is a happy number.

It is a super-2 number, since 2×122111221110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 122111221110.

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, 2035186989 + ... + 2035187048.

It is an arithmetic number, because the mean of its divisors is an integer number (18316683171).

Almost surely, 2^122111221110 is an apocalyptic number.

122111221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122111221110 is an abundant number, since it is smaller than the sum of its proper divisors (170955709626).

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

122111221110 is a wasteful number, since it uses less digits than its factorization.

122111221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070374047.

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

Adding to 122111221110 its reverse (11122111221), we get a palindrome (133233332331).

It can be divided in two parts, 12211 and 1221110, that added together give a palindrome (1233321).

The spelling of 122111221110 in words is "one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred ten".