210100120121011 has 4 divisors (see below), whose sum is σ = 210100572355024. Its totient is φ = 210099667887000.

The previous prime is 210100120121009. The next prime is 210100120121029. The reversal of 210100120121011 is 110121021001012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210100120121011 - 2¹ = 210100120121009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210100120120982 and 210100120121000.

It is not an unprimeable number, because it can be changed into a prime (210100120161011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225419415 + ... + 226349536.

It is an arithmetic number, because the mean of its divisors is an integer number (52525143088756).

Almost surely, 2^{210100120121011} is an apocalyptic number.

210100120121011 is a deficient number, since it is larger than the sum of its proper divisors (452234013).

210100120121011 is an equidigital number, since it uses as much as digits as its factorization.

210100120121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452234012.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210100120121011 its reverse (110121021001012), we get a palindrome (320221141122023).

The spelling of 210100120121011 in words is "two hundred ten trillion, one hundred billion, one hundred twenty million, one hundred twenty-one thousand, eleven".