210012121211 has 16 divisors (see below), whose sum is σ = 213694944384. Its totient is φ = 206367243264.

The previous prime is 210012121177. The next prime is 210012121237. The reversal of 210012121211 is 112121210012.

It is a cyclic number.

It is not a de Polignac number, because 210012121211 - 2¹⁰ = 210012120187 is a prime.

It is a super-2 number, since 2×210012121211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210012121411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8094686 + ... + 8120588.

It is an arithmetic number, because the mean of its divisors is an integer number (13355934024).

Almost surely, 2^210012121211 is an apocalyptic number.

210012121211 is a deficient number, since it is larger than the sum of its proper divisors (3682823173).

210012121211 is a wasteful number, since it uses less digits than its factorization.

210012121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210012121211 its reverse (112121210012), we get a palindrome (322133331223).

The spelling of 210012121211 in words is "two hundred ten billion, twelve million, one hundred twenty-one thousand, two hundred eleven".