211021012112 has 20 divisors (see below), whose sum is σ = 413447070060. Its totient is φ = 104324994048.

The previous prime is 211021012109. The next prime is 211021012117. The reversal of 211021012112 is 211210120112.

It can be written as a sum of positive squares in 2 ways, for example, as 148968209296 + 62052802816 = 385964^2 + 249104^2 .

It is not an unprimeable number, because it can be changed into a prime (211021012117) 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, 74093033 + ... + 74095880.

It is an arithmetic number, because the mean of its divisors is an integer number (20672353503).

Almost surely, 2^211021012112 is an apocalyptic number.

It is an amenable number.

211021012112 is a deficient number, since it is larger than the sum of its proper divisors (202426057948).

211021012112 is a wasteful number, since it uses less digits than its factorization.

211021012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148189010 (or 148189004 counting only the distinct ones).

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

Adding to 211021012112 its reverse (211210120112), we get a palindrome (422231132224).

The spelling of 211021012112 in words is "two hundred eleven billion, twenty-one million, twelve thousand, one hundred twelve".