212021112030 has 384 divisors, whose sum is σ = 662224066560. Its totient is φ = 43029504000.

The previous prime is 212021112019. The next prime is 212021112047. The reversal of 212021112030 is 30211120212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 52990030 + ... + 52994030.

It is an arithmetic number, because the mean of its divisors is an integer number (1724541840).

Almost surely, 2^212021112030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212021112030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331112033280).

212021112030 is an abundant number, since it is smaller than the sum of its proper divisors (450202954530).

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

212021112030 is a wasteful number, since it uses less digits than its factorization.

212021112030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144 (or 4137 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212021112030 its reverse (30211120212), we get a palindrome (242232232242).

The spelling of 212021112030 in words is "two hundred twelve billion, twenty-one million, one hundred twelve thousand, thirty".