1012211020020 has 48 divisors (see below), whose sum is σ = 2834598247488. Its totient is φ = 269884139520.

The previous prime is 1012211020001. The next prime is 1012211020021. The reversal of 1012211020020 is 200201122101.

It is a super-2 number, since 2×1012211020020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1012211019978 and 1012211020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012211020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790366 + ... + 1627605.

It is an arithmetic number, because the mean of its divisors is an integer number (59054130156).

Almost surely, 2^{1012211020020} is an apocalyptic number.

1012211020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012211020020 is an abundant number, since it is smaller than the sum of its proper divisors (1822387227468).

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

1012211020020 is a wasteful number, since it uses less digits than its factorization.

1012211020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424960 (or 2424958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1012211020020 its reverse (200201122101), we get a palindrome (1212412142121).

The spelling of 1012211020020 in words is "one trillion, twelve billion, two hundred eleven million, twenty thousand, twenty".