211021120012 has 6 divisors (see below), whose sum is σ = 369286960028. Its totient is φ = 105510560004.

The previous prime is 211021119997. The next prime is 211021120031. The reversal of 211021120012 is 210021120112.

It is a super-2 number, since 2×211021120012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211021119974 and 211021120001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26377639998 + ... + 26377640005.

Almost surely, 2^211021120012 is an apocalyptic number.

It is an amenable number.

211021120012 is a deficient number, since it is larger than the sum of its proper divisors (158265840016).

211021120012 is a wasteful number, since it uses less digits than its factorization.

211021120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52755280007 (or 52755280005 counting only the distinct ones).

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

Adding to 211021120012 its reverse (210021120112), we get a palindrome (421042240124).

The spelling of 211021120012 in words is "two hundred eleven billion, twenty-one million, one hundred twenty thousand, twelve".