221202100012 has 48 divisors (see below), whose sum is σ = 423478927872. Its totient is φ = 100687023360.

The previous prime is 221202099983. The next prime is 221202100033. The reversal of 221202100012 is 210001202122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221202099965 and 221202100001.

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 15 ways as a sum of consecutive naturals, for example, 66064 + ... + 668407.

It is an arithmetic number, because the mean of its divisors is an integer number (8822477664).

Almost surely, 2^221202100012 is an apocalyptic number.

It is an amenable number.

221202100012 is a deficient number, since it is larger than the sum of its proper divisors (202276827860).

221202100012 is a wasteful number, since it uses less digits than its factorization.

221202100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734638 (or 734636 counting only the distinct ones).

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

Adding to 221202100012 its reverse (210001202122), we get a palindrome (431203302134).

The spelling of 221202100012 in words is "two hundred twenty-one billion, two hundred two million, one hundred thousand, twelve".