101212212021111 has 12 divisors (see below), whose sum is σ = 146952906575488. Its totient is φ = 67125197608704.

The previous prime is 101212212021103. The next prime is 101212212021127. The reversal of 101212212021111 is 111120212212101.

It is a happy number.

101212212021111 is a `hidden beast` number, since 10 + 121 + 221 + 202 + 1 + 111 = 666.

It is not a de Polignac number, because 101212212021111 - 2³ = 101212212021103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212212021131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29134198615 + ... + 29134202088.

Almost surely, 2^{101212212021111} is an apocalyptic number.

101212212021111 is a deficient number, since it is larger than the sum of its proper divisors (45740694554377).

101212212021111 is a wasteful number, since it uses less digits than its factorization.

101212212021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58268400902 (or 58268400899 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 101212212021111 its reverse (111120212212101), we get a palindrome (212332424233212).

The spelling of 101212212021111 in words is "one hundred one trillion, two hundred twelve billion, two hundred twelve million, twenty-one thousand, one hundred eleven".