100021212120212 has 12 divisors (see below), whose sum is σ = 176642966359860. Its totient is φ = 49551793160256.

The previous prime is 100021212120211. The next prime is 100021212120227. The reversal of 100021212120212 is 212021212120001.

It can be written as a sum of positive squares in 2 ways, for example, as 75852150350596 + 24169061769616 = 8709314^2 + 4916204^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021212120211) 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, 114703224473 + ... + 114703225344.

It is an arithmetic number, because the mean of its divisors is an integer number (14720247196655).

Almost surely, 2^{100021212120212} is an apocalyptic number.

It is an amenable number.

100021212120212 is a deficient number, since it is larger than the sum of its proper divisors (76621754239648).

100021212120212 is a wasteful number, since it uses less digits than its factorization.

100021212120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229406449930 (or 229406449928 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100021212120212 its reverse (212021212120001), we get a palindrome (312042424240213).

It can be divided in two parts, 1000 and 21212120212, that added together give a palindrome (21212121212).

The spelling of 100021212120212 in words is "one hundred trillion, twenty-one billion, two hundred twelve million, one hundred twenty thousand, two hundred twelve".