1011211212020 has 12 divisors (see below), whose sum is σ = 2123543545284. Its totient is φ = 404484484800.

The previous prime is 1011211212013. The next prime is 1011211212071. The reversal of 1011211212020 is 202121121101.

It can be written as a sum of positive squares in 2 ways, for example, as 273608501776 + 737602710244 = 523076^2 + 858838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1011211211986 and 1011211212004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25280280281 + ... + 25280280320.

It is an arithmetic number, because the mean of its divisors is an integer number (176961962107).

Almost surely, 2^{1011211212020} is an apocalyptic number.

1011211212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011211212020 is an abundant number, since it is smaller than the sum of its proper divisors (1112332333264).

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

1011211212020 is a wasteful number, since it uses less digits than its factorization.

1011211212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50560560610 (or 50560560608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011211212020 its reverse (202121121101), we get a palindrome (1213332333121).

The spelling of 1011211212020 in words is "one trillion, eleven billion, two hundred eleven million, two hundred twelve thousand, twenty".