212020120111020 has 192 divisors, whose sum is σ = 641055437568000. Its totient is φ = 52048117638144.

The previous prime is 212020120110991. The next prime is 212020120111021. The reversal of 212020120111020 is 20111021020212.

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

It is not an unprimeable number, because it can be changed into a prime (212020120111021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2354190751 + ... + 2354280809.

It is an arithmetic number, because the mean of its divisors is an integer number (3338830404000).

Almost surely, 2^{212020120111020} is an apocalyptic number.

212020120111020 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 212020120111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320527718784000).

212020120111020 is an abundant number, since it is smaller than the sum of its proper divisors (429035317456980).

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

212020120111020 is a wasteful number, since it uses less digits than its factorization.

212020120111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98232 (or 98230 counting only the distinct ones).

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

Adding to 212020120111020 its reverse (20111021020212), we get a palindrome (232131141131232).

The spelling of 212020120111020 in words is "two hundred twelve trillion, twenty billion, one hundred twenty million, one hundred eleven thousand, twenty".