210012235511 has 32 divisors (see below), whose sum is σ = 233839001088. Its totient is φ = 187379337600.

The previous prime is 210012235493. The next prime is 210012235541. The reversal of 210012235511 is 115532210012.

It is a de Polignac number, because none of the positive numbers 2^k-210012235511 is a prime.

It is a super-2 number, since 2×210012235511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012235541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110473661 + ... + 110475561.

It is an arithmetic number, because the mean of its divisors is an integer number (7307468784).

Almost surely, 2^210012235511 is an apocalyptic number.

210012235511 is a deficient number, since it is larger than the sum of its proper divisors (23826765577).

210012235511 is a wasteful number, since it uses less digits than its factorization.

210012235511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 210012235511 its reverse (115532210012), we get a palindrome (325544445523).

The spelling of 210012235511 in words is "two hundred ten billion, twelve million, two hundred thirty-five thousand, five hundred eleven".