212101011022020 has 192 divisors, whose sum is σ = 611779164837120. Its totient is φ = 54881608384512.

The previous prime is 212101011021997. The next prime is 212101011022051. The reversal of 212101011022020 is 20220110101212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 163572591 + ... + 164864169.

It is an arithmetic number, because the mean of its divisors is an integer number (3186349816860).

Almost surely, 2^{212101011022020} is an apocalyptic number.

212101011022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212101011022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305889582418560).

212101011022020 is an abundant number, since it is smaller than the sum of its proper divisors (399678153815100).

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

212101011022020 is a wasteful number, since it uses less digits than its factorization.

212101011022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292214 (or 1292212 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212101011022020 its reverse (20220110101212), we get a palindrome (232321121123232).

The spelling of 212101011022020 in words is "two hundred twelve trillion, one hundred one billion, eleven million, twenty-two thousand, twenty".