21212011102011 has 8 divisors (see below), whose sum is σ = 28283951149584. Its totient is φ = 14140705894560.

The previous prime is 21212011101973. The next prime is 21212011102013. The reversal of 21212011102011 is 11020111021212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21212011102011 - 2²³ = 21212002713403 is a prime.

It is a super-4 number, since 4×21212011102011⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (21212011102013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158632060 + ... + 158765721.

It is an arithmetic number, because the mean of its divisors is an integer number (3535493893698).

Almost surely, 2^{21212011102011} is an apocalyptic number.

21212011102011 is a deficient number, since it is larger than the sum of its proper divisors (7071940047573).

21212011102011 is a wasteful number, since it uses less digits than its factorization.

21212011102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317420061.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21212011102011 its reverse (11020111021212), we get a palindrome (32232122123223).

The spelling of 21212011102011 in words is "twenty-one trillion, two hundred twelve billion, eleven million, one hundred two thousand, eleven".