212111020220 has 24 divisors (see below), whose sum is σ = 485927065008. Its totient is φ = 77131280000.

The previous prime is 212111020201. The next prime is 212111020237. The reversal of 212111020220 is 22020111212.

It is a junction number, because it is equal to n+sod(n) for n = 212111020195 and 212111020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482070281 + ... + 482070720.

It is an arithmetic number, because the mean of its divisors is an integer number (20246961042).

Almost surely, 2^212111020220 is an apocalyptic number.

212111020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111020220 is an abundant number, since it is smaller than the sum of its proper divisors (273816044788).

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

212111020220 is a wasteful number, since it uses less digits than its factorization.

212111020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964141021 (or 964141019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212111020220 its reverse (22020111212), we get a palindrome (234131131432).

The spelling of 212111020220 in words is "two hundred twelve billion, one hundred eleven million, twenty thousand, two hundred twenty".