212011120020 has 48 divisors (see below), whose sum is σ = 678435585408. Its totient is φ = 48459684480.

The previous prime is 212011120003. The next prime is 212011120039. The reversal of 212011120020 is 20021110212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 212011119978 and 212011120005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252393771 + ... + 252394610.

It is an arithmetic number, because the mean of its divisors is an integer number (14134074696).

Almost surely, 2^212011120020 is an apocalyptic number.

212011120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011120020 is an abundant number, since it is smaller than the sum of its proper divisors (466424465388).

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

212011120020 is a wasteful number, since it uses less digits than its factorization.

212011120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504788400 (or 504788398 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212011120020 its reverse (20021110212), we get a palindrome (232032230232).

The spelling of 212011120020 in words is "two hundred twelve billion, eleven million, one hundred twenty thousand, twenty".