10021111121212 has 6 divisors (see below), whose sum is σ = 17536944462128. Its totient is φ = 5010555560604.

The previous prime is 10021111121159. The next prime is 10021111121237. The reversal of 10021111121212 is 21212111112001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252638890148 + ... + 1252638890155.

Almost surely, 2^{10021111121212} is an apocalyptic number.

It is an amenable number.

10021111121212 is a deficient number, since it is larger than the sum of its proper divisors (7515833340916).

10021111121212 is a wasteful number, since it uses less digits than its factorization.

10021111121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505277780307 (or 2505277780305 counting only the distinct ones).

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

Adding to 10021111121212 its reverse (21212111112001), we get a palindrome (31233222233213).

The spelling of 10021111121212 in words is "ten trillion, twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".