212202202221020 has 48 divisors (see below), whose sum is σ = 486839479787136. Its totient is φ = 77052766440000.

The previous prime is 212202202221001. The next prime is 212202202221077. The reversal of 212202202221020 is 20122202202212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212202202220983 and 212202202221001.

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, 697789706 + ... + 698093745.

It is an arithmetic number, because the mean of its divisors is an integer number (10142489162232).

Almost surely, 2^{212202202221020} is an apocalyptic number.

212202202221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212202202221020 is an abundant number, since it is smaller than the sum of its proper divisors (274637277566116).

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

212202202221020 is a wasteful number, since it uses less digits than its factorization.

212202202221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395884162 (or 1395884160 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212202202221020 its reverse (20122202202212), we get a palindrome (232324404423232).

The spelling of 212202202221020 in words is "two hundred twelve trillion, two hundred two billion, two hundred two million, two hundred twenty-one thousand, twenty".