10021111222212 has 18 divisors (see below), whose sum is σ = 25331142256238. Its totient is φ = 3340370407392.

The previous prime is 10021111222163. The next prime is 10021111222231. The reversal of 10021111222212 is 21222211112001.

10021111222212 is a `hidden beast` number, since 10 + 0 + 211 + 11 + 222 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9679664998656 + 341446223556 = 3111216^2 + 584334^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139182100273 + ... + 139182100344.

Almost surely, 2^{10021111222212} is an apocalyptic number.

10021111222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021111222212 is an abundant number, since it is smaller than the sum of its proper divisors (15310031034026).

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

10021111222212 is a wasteful number, since it uses less digits than its factorization.

10021111222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278364200627 (or 278364200622 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10021111222212 its reverse (21222211112001), we get a palindrome (31243322334213).

The spelling of 10021111222212 in words is "ten trillion, twenty-one billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twelve".