1012001210220 has 384 divisors, whose sum is σ = 3907392878592. Its totient is φ = 188863488000.

The previous prime is 1012001210203. The next prime is 1012001210243. The reversal of 1012001210220 is 220121002101.

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 = 1012001210196 and 1012001210205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1994520 + ... + 2449920.

It is an arithmetic number, because the mean of its divisors is an integer number (10175502288).

Almost surely, 2^{1012001210220} is an apocalyptic number.

1012001210220 is a gapful number since it is divisible by the number (10) 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 1012001210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1953696439296).

1012001210220 is an abundant number, since it is smaller than the sum of its proper divisors (2895391668372).

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

1012001210220 is a wasteful number, since it uses less digits than its factorization.

1012001210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455481 (or 455479 counting only the distinct ones).

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

Adding to 1012001210220 its reverse (220121002101), we get a palindrome (1232122212321).

It can be divided in two parts, 1012001 and 210220, that added together give a palindrome (1222221).

The spelling of 1012001210220 in words is "one trillion, twelve billion, one million, two hundred ten thousand, two hundred twenty".