210202012111 has 16 divisors (see below), whose sum is σ = 258932749824. Its totient is φ = 166170592224.

The previous prime is 210202012109. The next prime is 210202012151. The reversal of 210202012111 is 111210202012.

It is not a de Polignac number, because 210202012111 - 2¹ = 210202012109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 210202012091 and 210202012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202012151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887251 + ... + 1098916.

It is an arithmetic number, because the mean of its divisors is an integer number (16183296864).

Almost surely, 2^210202012111 is an apocalyptic number.

210202012111 is a deficient number, since it is larger than the sum of its proper divisors (48730737713).

210202012111 is a wasteful number, since it uses less digits than its factorization.

210202012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987350.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210202012111 its reverse (111210202012), we get a palindrome (321412214123).

It can be divided in two parts, 210202012 and 111, that multiplied together give a palindrome (23332423332).

The spelling of 210202012111 in words is "two hundred ten billion, two hundred two million, twelve thousand, one hundred eleven".