1021001010220 has 24 divisors (see below), whose sum is σ = 2193964963344. Its totient is φ = 398902719936.

The previous prime is 1021001010209. The next prime is 1021001010221. The reversal of 1021001010220 is 220101001201.

1021001010220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1021001010197 and 1021001010206.

It is not an unprimeable number, because it can be changed into a prime (1021001010221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593604379 + ... + 593606098.

It is an arithmetic number, because the mean of its divisors is an integer number (91415206806).

Almost surely, 2^{1021001010220} is an apocalyptic number.

1021001010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021001010220 is an abundant number, since it is smaller than the sum of its proper divisors (1172963953124).

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

1021001010220 is a wasteful number, since it uses less digits than its factorization.

1021001010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187210529 (or 1187210527 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021001010220 its reverse (220101001201), we get a palindrome (1241102011421).

The spelling of 1021001010220 in words is "one trillion, twenty-one billion, one million, ten thousand, two hundred twenty".