20212120230 has 32 divisors (see below), whose sum is σ = 48604428000. Its totient is φ = 5379305472.

The previous prime is 20212120223. The next prime is 20212120237. The reversal of 20212120230 is 3202121202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20212120223) and next prime (20212120237).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212120237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646555 + ... + 677094.

It is an arithmetic number, because the mean of its divisors is an integer number (1518888375).

Almost surely, 2^20212120230 is an apocalyptic number.

20212120230 is an abundant number, since it is smaller than the sum of its proper divisors (28392307770).

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

20212120230 is a wasteful number, since it uses less digits than its factorization.

20212120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324168.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20212120230 its reverse (3202121202), we get a palindrome (23414241432).

The spelling of 20212120230 in words is "twenty billion, two hundred twelve million, one hundred twenty thousand, two hundred thirty".