122221012110 has 32 divisors (see below), whose sum is σ = 293339659680. Its totient is φ = 32591244288.

The previous prime is 122221012073. The next prime is 122221012129. The reversal of 122221012110 is 11210122221.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122221012110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710786 + ... + 1780794.

It is an arithmetic number, because the mean of its divisors is an integer number (9166864365).

Almost surely, 2^122221012110 is an apocalyptic number.

122221012110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122221012110 is an abundant number, since it is smaller than the sum of its proper divisors (171118647570).

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

122221012110 is a wasteful number, since it uses less digits than its factorization.

122221012110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128212.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122221012110 its reverse (11210122221), we get a palindrome (133431134331).

The spelling of 122221012110 in words is "one hundred twenty-two billion, two hundred twenty-one million, twelve thousand, one hundred ten".