122222221011 has 48 divisors (see below), whose sum is σ = 194517393408. Its totient is φ = 73336233600.

The previous prime is 122222221003. The next prime is 122222221057. The reversal of 122222221011 is 110122222221.

It is a happy number.

122222221011 is a `hidden beast` number, since 1 + 222 + 222 + 210 + 11 = 666.

It is not a de Polignac number, because 122222221011 - 2³ = 122222221003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122222221001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6113071 + ... + 6133031.

It is an arithmetic number, because the mean of its divisors is an integer number (4052445696).

Almost surely, 2^122222221011 is an apocalyptic number.

122222221011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122222221011 is a deficient number, since it is larger than the sum of its proper divisors (72295172397).

122222221011 is a wasteful number, since it uses less digits than its factorization.

122222221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20592 (or 20589 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122222221011 its reverse (110122222221), we get a palindrome (232344443232).

It can be divided in two parts, 1222222210 and 11, that added together give a palindrome (1222222221).

The spelling of 122222221011 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, eleven".