122012221012220 has 144 divisors (see below), whose sum is σ = 325162250858592. Its totient is φ = 38028893736960.

The previous prime is 122012221012169. The next prime is 122012221012223. The reversal of 122012221012220 is 22210122210221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122012221012192 and 122012221012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012221012223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 577885712 + ... + 578096808.

It is an arithmetic number, because the mean of its divisors is an integer number (2258071186518).

Almost surely, 2^{122012221012220} is an apocalyptic number.

122012221012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122012221012220 is an abundant number, since it is smaller than the sum of its proper divisors (203150029846372).

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

122012221012220 is a wasteful number, since it uses less digits than its factorization.

122012221012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264748 (or 264739 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 122012221012220 its reverse (22210122210221), we get a palindrome (144222343222441).

The spelling of 122012221012220 in words is "one hundred twenty-two trillion, twelve billion, two hundred twenty-one million, twelve thousand, two hundred twenty".