122021221110012 has 192 divisors, whose sum is σ = 377552397680640. Its totient is φ = 33321893787072.

The previous prime is 122021221110011. The next prime is 122021221110017. The reversal of 122021221110012 is 210011122120221.

122021221110012 is a `hidden beast` number, since 1 + 220 + 212 + 211 + 10 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021221110011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20041513 + ... + 25410719.

It is an arithmetic number, because the mean of its divisors is an integer number (1966418737920).

Almost surely, 2^{122021221110012} is an apocalyptic number.

122021221110012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122021221110012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188776198840320).

122021221110012 is an abundant number, since it is smaller than the sum of its proper divisors (255531176570628).

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

122021221110012 is a wasteful number, since it uses less digits than its factorization.

122021221110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370557 (or 5370549 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 122021221110012 its reverse (210011122120221), we get a palindrome (332032343230233).

The spelling of 122021221110012 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred twenty-one million, one hundred ten thousand, twelve".