10121011211 has 4 divisors (see below), whose sum is σ = 10121824752. Its totient is φ = 10120197672.

The previous prime is 10121011157. The next prime is 10121011231. The reversal of 10121011211 is 11211012101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11211012101 = 92189 ⋅121609.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10121011211 is a prime.

It is a super-3 number, since 3×10121011211³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121011192 and 10121011201.

It is not an unprimeable number, because it can be changed into a prime (10121011231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387815 + ... + 413088.

It is an arithmetic number, because the mean of its divisors is an integer number (2530456188).

Almost surely, 2^10121011211 is an apocalyptic number.

10121011211 is a deficient number, since it is larger than the sum of its proper divisors (813541).

10121011211 is an equidigital number, since it uses as much as digits as its factorization.

10121011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813540.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10121011211 its reverse (11211012101), we get a palindrome (21332023312).

The spelling of 10121011211 in words is "ten billion, one hundred twenty-one million, eleven thousand, two hundred eleven".