210000100121011 has 4 divisors (see below), whose sum is σ = 210000251994192. Its totient is φ = 209999948247832.

The previous prime is 210000100120957. The next prime is 210000100121041. The reversal of 210000100121011 is 110121001000012.

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 210000100121011 - 2¹⁵ = 210000100088243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210000100121041) 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, 73843255 + ... + 76634368.

It is an arithmetic number, because the mean of its divisors is an integer number (52500062998548).

Almost surely, 2^{210000100121011} is an apocalyptic number.

210000100121011 is a deficient number, since it is larger than the sum of its proper divisors (151873181).

210000100121011 is a wasteful number, since it uses less digits than its factorization.

210000100121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151873180.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210000100121011 its reverse (110121001000012), we get a palindrome (320121101121023).

The spelling of 210000100121011 in words is "two hundred ten trillion, one hundred million, one hundred twenty-one thousand, eleven".