211000221012 has 96 divisors (see below), whose sum is σ = 591313795072. Its totient is φ = 57292292736.

The previous prime is 211000220993. The next prime is 211000221013. The reversal of 211000221012 is 210122000112.

It is a super-2 number, since 2×211000221012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000221013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 655768 + ... + 923055.

Almost surely, 2^211000221012 is an apocalyptic number.

It is an amenable number.

211000221012 is an abundant number, since it is smaller than the sum of its proper divisors (380313574060).

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

211000221012 is a wasteful number, since it uses less digits than its factorization.

211000221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578917 (or 1578915 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211000221012 its reverse (210122000112), we get a palindrome (421122221124).

The spelling of 211000221012 in words is "two hundred eleven billion, two hundred twenty-one thousand, twelve".