211010011212121 has 8 divisors (see below), whose sum is σ = 243733488886944. Its totient is φ = 180543325101120.

The previous prime is 211010011212089. The next prime is 211010011212149. The reversal of 211010011212121 is 121212110010112.

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

It is a cyclic number.

It is not a de Polignac number, because 211010011212121 - 2⁵ = 211010011212089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211010011212095 and 211010011212104.

It is not an unprimeable number, because it can be changed into a prime (211010011212421) 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, 564197890755 + ... + 564197891128.

It is an arithmetic number, because the mean of its divisors is an integer number (30466686110868).

Almost surely, 2^{211010011212121} is an apocalyptic number.

It is an amenable number.

211010011212121 is a deficient number, since it is larger than the sum of its proper divisors (32723477674823).

211010011212121 is a wasteful number, since it uses less digits than its factorization.

211010011212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128395781911.

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

Adding to 211010011212121 its reverse (121212110010112), we get a palindrome (332222121222233).

The spelling of 211010011212121 in words is "two hundred eleven trillion, ten billion, eleven million, two hundred twelve thousand, one hundred twenty-one".