212021121030 has 192 divisors, whose sum is σ = 570540983040. Its totient is φ = 50263918848.

The previous prime is 212021121001. The next prime is 212021121047. The reversal of 212021121030 is 30121120212.

212021121030 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212021121030³ (a number of 35 digits) contains 333 as substring.

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 95 ways as a sum of consecutive naturals, for example, 15974457 + ... + 15987723.

It is an arithmetic number, because the mean of its divisors is an integer number (2971567620).

Almost surely, 2^212021121030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212021121030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285270491520).

212021121030 is an abundant number, since it is smaller than the sum of its proper divisors (358519862010).

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

212021121030 is a wasteful number, since it uses less digits than its factorization.

212021121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13395 (or 13372 counting only the distinct ones).

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

Adding to 212021121030 its reverse (30121120212), we get a palindrome (242142241242).

The spelling of 212021121030 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, thirty".