211212212100001 has 16 divisors (see below), whose sum is σ = 242298055103104. Its totient is φ = 180354851973504.

The previous prime is 211212212099981. The next prime is 211212212100017. The reversal of 211212212100001 is 100001212212112.

211212212100001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 211212212100001 - 2⁹ = 211212212099489 is a prime.

It is a super-2 number, since 2×211212212100001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211212212100401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5103210 + ... + 21177043.

It is an arithmetic number, because the mean of its divisors is an integer number (15143628443944).

Almost surely, 2^{211212212100001} is an apocalyptic number.

It is an amenable number.

211212212100001 is a deficient number, since it is larger than the sum of its proper divisors (31085843003103).

211212212100001 is a wasteful number, since it uses less digits than its factorization.

211212212100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26284600.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211212212100001 its reverse (100001212212112), we get a palindrome (311213424312113).

The spelling of 211212212100001 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred twelve million, one hundred thousand, one".