211012121121101 has 8 divisors (see below), whose sum is σ = 213985508102208. Its totient is φ = 208038772620000.

The previous prime is 211012121121037. The next prime is 211012121121199. The reversal of 211012121121101 is 101121121210112.

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 211012121121101 - 2⁶ = 211012121121037 is a prime.

It is a super-2 number, since 2×211012121121101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211012121121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012121121301) 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, 1514801 + ... + 20599001.

It is an arithmetic number, because the mean of its divisors is an integer number (26748188512776).

Almost surely, 2^{211012121121101} is an apocalyptic number.

It is an amenable number.

211012121121101 is a deficient number, since it is larger than the sum of its proper divisors (2973386981107).

211012121121101 is a wasteful number, since it uses less digits than its factorization.

211012121121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19240003.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211012121121101 its reverse (101121121210112), we get a palindrome (312133242331213).

The spelling of 211012121121101 in words is "two hundred eleven trillion, twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred one".