211021212012 has 48 divisors (see below), whose sum is σ = 530356468992. Its totient is φ = 64917599040.

The previous prime is 211021212011. The next prime is 211021212013. The reversal of 211021212012 is 210212120112.

It is an interprime number because it is at equal distance from previous prime (211021212011) and next prime (211021212013).

It is a junction number, because it is equal to n+sod(n) for n = 211021211982 and 211021212000.

It is not an unprimeable number, because it can be changed into a prime (211021212011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740553 + ... + 985119.

It is an arithmetic number, because the mean of its divisors is an integer number (11049093104).

Almost surely, 2^211021212012 is an apocalyptic number.

It is an amenable number.

211021212012 is an abundant number, since it is smaller than the sum of its proper divisors (319335256980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211021212012 is a wasteful number, since it uses less digits than its factorization.

211021212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250118 (or 250116 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211021212012 its reverse (210212120112), we get a palindrome (421233332124).

The spelling of 211021212012 in words is "two hundred eleven billion, twenty-one million, two hundred twelve thousand, twelve".