212000022011 has 4 divisors (see below), whose sum is σ = 215164201512. Its totient is φ = 208835842512.

The previous prime is 212000022007. The next prime is 212000022089. The reversal of 212000022011 is 110220000212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212000022011 - 2² = 212000022007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212000021983 and 212000022001.

It is not an unprimeable number, because it can be changed into a prime (212000022511) 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, 1582089650 + ... + 1582089783.

It is an arithmetic number, because the mean of its divisors is an integer number (53791050378).

Almost surely, 2^212000022011 is an apocalyptic number.

212000022011 is a deficient number, since it is larger than the sum of its proper divisors (3164179501).

212000022011 is an equidigital number, since it uses as much as digits as its factorization.

212000022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164179500.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212000022011 its reverse (110220000212), we get a palindrome (322220022223).

The spelling of 212000022011 in words is "two hundred twelve billion, twenty-two thousand, eleven".