1202122120 has 32 divisors (see below), whose sum is σ = 2749120920. Its totient is φ = 472965120.

The previous prime is 1202122111. The next prime is 1202122127. The reversal of 1202122120 is 212212021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 274432356 + 927689764 = 16566^2 + 30458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1202122120.

It is not an unprimeable number, because it can be changed into a prime (1202122127) 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, 243897 + ... + 248776.

Almost surely, 2^1202122120 is an apocalyptic number.

1202122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202122120 is an abundant number, since it is smaller than the sum of its proper divisors (1546998800).

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

1202122120 is a wasteful number, since it uses less digits than its factorization.

1202122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492745 (or 492741 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1202122120 is about 34671.6327853189. The cubic root of 1202122120 is about 1063.2846139000.

Adding to 1202122120 its reverse (212212021), we get a palindrome (1414334141).

The spelling of 1202122120 in words is "one billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty".