122401100500220 has 48 divisors (see below), whose sum is σ = 258530862276288. Its totient is φ = 48676912673280.

The previous prime is 122401100500073. The next prime is 122401100500229. The reversal of 122401100500220 is 22005001104221.

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 = 122401100500192 and 122401100500201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122401100500229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601581905 + ... + 601785335.

It is an arithmetic number, because the mean of its divisors is an integer number (5386059630756).

Almost surely, 2^{122401100500220} is an apocalyptic number.

122401100500220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122401100500220 is an abundant number, since it is smaller than the sum of its proper divisors (136129761776068).

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

122401100500220 is a wasteful number, since it uses less digits than its factorization.

122401100500220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377510 (or 377508 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 122401100500220 its reverse (22005001104221), we get a palindrome (144406101604441).

The spelling of 122401100500220 in words is "one hundred twenty-two trillion, four hundred one billion, one hundred million, five hundred thousand, two hundred twenty".