100212122111211 has 30 divisors (see below), whose sum is σ = 164545830149316. Its totient is φ = 60734619455400.

The previous prime is 100212122111197. The next prime is 100212122111251. The reversal of 100212122111211 is 112111221212001.

It is a happy number.

100212122111211 is a `hidden beast` number, since 10 + 0 + 21 + 212 + 211 + 1 + 211 = 666.

It is not a de Polignac number, because 100212122111211 - 2²⁶ = 100212055002347 is a prime.

It is a super-2 number, since 2×100212122111211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100212122111251) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5112331905 + ... + 5112351506.

Almost surely, 2^{100212122111211} is an apocalyptic number.

100212122111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100212122111211 is a deficient number, since it is larger than the sum of its proper divisors (64333708038105).

100212122111211 is a wasteful number, since it uses less digits than its factorization.

100212122111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224683445 (or 10224683425 counting only the distinct ones).

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

Adding to 100212122111211 its reverse (112111221212001), we get a palindrome (212323343323212).

The spelling of 100212122111211 in words is "one hundred trillion, two hundred twelve billion, one hundred twenty-two million, one hundred eleven thousand, two hundred eleven".