122212233120020 has 24 divisors (see below), whose sum is σ = 256656478969800. Its totient is φ = 48882838120832.

The previous prime is 122212233120011. The next prime is 122212233120023. The reversal of 122212233120020 is 20021332212221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28101512779396 + 94110720340624 = 5301086^2 + 9701068^2 .

It is a super-2 number, since 2×122212233120020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212233120023) 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, 127957775 + ... + 128909334.

It is an arithmetic number, because the mean of its divisors is an integer number (10694019957075).

Almost surely, 2^{122212233120020} is an apocalyptic number.

122212233120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122212233120020 is an abundant number, since it is smaller than the sum of its proper divisors (134444245849780).

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

122212233120020 is a wasteful number, since it uses less digits than its factorization.

122212233120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256890907 (or 256890905 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 122212233120020 its reverse (20021332212221), we get a palindrome (142233565332241).

The spelling of 122212233120020 in words is "one hundred twenty-two trillion, two hundred twelve billion, two hundred thirty-three million, one hundred twenty thousand, twenty".