122201220 has 24 divisors (see below), whose sum is σ = 342163584. Its totient is φ = 32586976.

The previous prime is 122201207. The next prime is 122201221. The reversal of 122201220 is 22102221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 122201196 and 122201205.

It is not an unprimeable number, because it can be changed into a prime (122201221) 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, 1018284 + ... + 1018403.

It is an arithmetic number, because the mean of its divisors is an integer number (14256816).

Almost surely, 2^122201220 is an apocalyptic number.

122201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122201220 is an abundant number, since it is smaller than the sum of its proper divisors (219962364).

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

122201220 is a wasteful number, since it uses less digits than its factorization.

122201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036699 (or 2036697 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 122201220 is about 11054.4660658034. The cubic root of 122201220 is about 496.2400903638.

Adding to 122201220 its reverse (22102221), we get a palindrome (144303441).

The spelling of 122201220 in words is "one hundred twenty-two million, two hundred one thousand, two hundred twenty".