1012211201020 has 12 divisors (see below), whose sum is σ = 2125643522184. Its totient is φ = 404884480400.

The previous prime is 1012211201011. The next prime is 1012211201063. The reversal of 1012211201020 is 201021122101.

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, 25305280006 + ... + 25305280045.

It is an arithmetic number, because the mean of its divisors is an integer number (177136960182).

Almost surely, 2^{1012211201020} is an apocalyptic number.

1012211201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012211201020 is an abundant number, since it is smaller than the sum of its proper divisors (1113432321164).

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

1012211201020 is a wasteful number, since it uses less digits than its factorization.

1012211201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50610560060 (or 50610560058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1012211201020 its reverse (201021122101), we get a palindrome (1213232323121).

The spelling of 1012211201020 in words is "one trillion, twelve billion, two hundred eleven million, two hundred one thousand, twenty".