212101023220 has 48 divisors (see below), whose sum is σ = 447920928000. Its totient is φ = 84363574400.

The previous prime is 212101023203. The next prime is 212101023227. The reversal of 212101023220 is 22320101212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212101023194 and 212101023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101023227) 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, 3319131 + ... + 3382429.

It is an arithmetic number, because the mean of its divisors is an integer number (9331686000).

Almost surely, 2^212101023220 is an apocalyptic number.

212101023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101023220 is an abundant number, since it is smaller than the sum of its proper divisors (235819904780).

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

212101023220 is a wasteful number, since it uses less digits than its factorization.

212101023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64248 (or 64246 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212101023220 its reverse (22320101212), we get a palindrome (234421124432).

The spelling of 212101023220 in words is "two hundred twelve billion, one hundred one million, twenty-three thousand, two hundred twenty".