10221202120 has 16 divisors (see below), whose sum is σ = 22997704860. Its totient is φ = 4088480832.

The previous prime is 10221202099. The next prime is 10221202127. The reversal of 10221202120 is 2120212201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9176490436 + 1044711684 = 95794^2 + 32322^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10221202120.

It is not an unprimeable number, because it can be changed into a prime (10221202127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127764987 + ... + 127765066.

Almost surely, 2^10221202120 is an apocalyptic number.

10221202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221202120 is an abundant number, since it is smaller than the sum of its proper divisors (12776502740).

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

10221202120 is a wasteful number, since it uses less digits than its factorization.

10221202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255530064 (or 255530060 counting only the distinct ones).

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

Adding to 10221202120 its reverse (2120212201), we get a palindrome (12341414321).

The spelling of 10221202120 in words is "ten billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty".