210011111042 has 4 divisors (see below), whose sum is σ = 315016666566. Its totient is φ = 105005555520.

The previous prime is 210011110921. The next prime is 210011111047. The reversal of 210011111042 is 240111110012.

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

It can be written as a sum of positive squares in only one way, i.e., 141346673521 + 68664437521 = 375961^2 + 262039^2 .

It is a super-2 number, since 2×210011111042² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210011111047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52502777759 + ... + 52502777762.

Almost surely, 2^210011111042 is an apocalyptic number.

210011111042 is a deficient number, since it is larger than the sum of its proper divisors (105005555524).

210011111042 is a wasteful number, since it uses less digits than its factorization.

210011111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105005555523.

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

Adding to 210011111042 its reverse (240111110012), we get a palindrome (450122221054).

The spelling of 210011111042 in words is "two hundred ten billion, eleven million, one hundred eleven thousand, forty-two".