212021031211 has 8 divisors (see below), whose sum is σ = 231599616048. Its totient is φ = 192493104000.

The previous prime is 212021031199. The next prime is 212021031223. The reversal of 212021031211 is 112130120212.

It is an interprime number because it is at equal distance from previous prime (212021031199) and next prime (212021031223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212021031211 - 2¹⁹ = 212020506923 is a prime.

It is a super-2 number, since 2×212021031211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021031241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12655650 + ... + 12672391.

It is an arithmetic number, because the mean of its divisors is an integer number (28949952006).

Almost surely, 2^212021031211 is an apocalyptic number.

212021031211 is a deficient number, since it is larger than the sum of its proper divisors (19578584837).

212021031211 is a wasteful number, since it uses less digits than its factorization.

212021031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25328813.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212021031211 its reverse (112130120212), we get a palindrome (324151151423).

The spelling of 212021031211 in words is "two hundred twelve billion, twenty-one million, thirty-one thousand, two hundred eleven".