1202101220 has 24 divisors (see below), whose sum is σ = 2558996664. Its totient is φ = 474253056.

The previous prime is 1202101169. The next prime is 1202101231. The reversal of 1202101220 is 221012021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 369664 + 1201731556 = 608^2 + 34666^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410219 + ... + 413138.

It is an arithmetic number, because the mean of its divisors is an integer number (106624861).

Almost surely, 2^1202101220 is an apocalyptic number.

1202101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202101220 is an abundant number, since it is smaller than the sum of its proper divisors (1356895444).

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

1202101220 is a wasteful number, since it uses less digits than its factorization.

1202101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823439 (or 823437 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1202101220 is about 34671.3313848776. The cubic root of 1202101220 is about 1063.2784518035.

Adding to 1202101220 its reverse (221012021), we get a palindrome (1423113241).

The spelling of 1202101220 in words is "one billion, two hundred two million, one hundred one thousand, two hundred twenty".