212133031420 has 48 divisors (see below), whose sum is σ = 447210300096. Its totient is φ = 84523712000.

The previous prime is 212133031379. The next prime is 212133031427. The reversal of 212133031420 is 24130331212.

It is a junction number, because it is equal to n+sod(n) for n = 212133031391 and 212133031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133031427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33610065 + ... + 33616375.

It is an arithmetic number, because the mean of its divisors is an integer number (9316881252).

Almost surely, 2^212133031420 is an apocalyptic number.

212133031420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212133031420 is an abundant number, since it is smaller than the sum of its proper divisors (235077268676).

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

212133031420 is a wasteful number, since it uses less digits than its factorization.

212133031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12582 (or 12580 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212133031420 its reverse (24130331212), we get a palindrome (236263362632).

The spelling of 212133031420 in words is "two hundred twelve billion, one hundred thirty-three million, thirty-one thousand, four hundred twenty".