211221021030112 has 48 divisors (see below), whose sum is σ = 429275369682432. Its totient is φ = 102199018354560.

The previous prime is 211221021030011. The next prime is 211221021030119. The reversal of 211221021030112 is 211030120122112.

211221021030112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211221021030112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211221021030112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221021030119) 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, 16726203 + ... + 26499205.

It is an arithmetic number, because the mean of its divisors is an integer number (8943236868384).

Almost surely, 2^{211221021030112} is an apocalyptic number.

It is an amenable number.

211221021030112 is an abundant number, since it is smaller than the sum of its proper divisors (218054348652320).

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

211221021030112 is a wasteful number, since it uses less digits than its factorization.

211221021030112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9794831 (or 9794823 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 211221021030112 its reverse (211030120122112), we get a palindrome (422251141152224).

The spelling of 211221021030112 in words is "two hundred eleven trillion, two hundred twenty-one billion, twenty-one million, thirty thousand, one hundred twelve".