101212211201211 has 24 divisors (see below), whose sum is σ = 162495076653936. Its totient is φ = 60183361717440.

The previous prime is 101212211201117. The next prime is 101212211201273. The reversal of 101212211201211 is 112102112212101.

It is a happy number.

101212211201211 is a `hidden beast` number, since 10 + 1 + 21 + 221 + 1 + 201 + 211 = 666.

It is not a de Polignac number, because 101212211201211 - 2⁹ = 101212211200699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101212211201611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9644764260 + ... + 9644774753.

It is an arithmetic number, because the mean of its divisors is an integer number (6770628193914).

Almost surely, 2^{101212211201211} is an apocalyptic number.

101212211201211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101212211201211 is a deficient number, since it is larger than the sum of its proper divisors (61282865452725).

101212211201211 is a wasteful number, since it uses less digits than its factorization.

101212211201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19289539083 (or 19289539080 counting only the distinct ones).

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

Adding to 101212211201211 its reverse (112102112212101), we get a palindrome (213314323413312).

The spelling of 101212211201211 in words is "one hundred one trillion, two hundred twelve billion, two hundred eleven million, two hundred one thousand, two hundred eleven".