1021020120210 has 128 divisors (see below), whose sum is σ = 2578924210176. Its totient is φ = 258346782720.

The previous prime is 1021020120199. The next prime is 1021020120221. The reversal of 1021020120210 is 120210201201.

1021020120210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1021020120199) and next prime (1021020120221).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85413594 + ... + 85425546.

It is an arithmetic number, because the mean of its divisors is an integer number (20147845392).

Almost surely, 2^{1021020120210} is an apocalyptic number.

1021020120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021020120210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289462105088).

1021020120210 is an abundant number, since it is smaller than the sum of its proper divisors (1557904089966).

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

1021020120210 is a wasteful number, since it uses less digits than its factorization.

1021020120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13780.

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

Adding to 1021020120210 its reverse (120210201201), we get a palindrome (1141230321411).

The spelling of 1021020120210 in words is "one trillion, twenty-one billion, twenty million, one hundred twenty thousand, two hundred ten".