212202100202220 has 72 divisors (see below), whose sum is σ = 643748751159696. Its totient is φ = 56581156636032.

The previous prime is 212202100202137. The next prime is 212202100202221. The reversal of 212202100202220 is 22202001202212.

212202100202220 is a `hidden beast` number, since 2 + 1 + 220 + 21 + 0 + 0 + 202 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212202100202193 and 212202100202202.

It is not an unprimeable number, because it can be changed into a prime (212202100202221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61547247 + ... + 64903526.

It is an arithmetic number, because the mean of its divisors is an integer number (8940954877218).

Almost surely, 2^{212202100202220} is an apocalyptic number.

212202100202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212202100202220 is an abundant number, since it is smaller than the sum of its proper divisors (431546650957476).

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

212202100202220 is a wasteful number, since it uses less digits than its factorization.

212202100202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126460111 (or 126460106 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212202100202220 its reverse (22202001202212), we get a palindrome (234404101404432).

The spelling of 212202100202220 in words is "two hundred twelve trillion, two hundred two billion, one hundred million, two hundred two thousand, two hundred twenty".