1021120101210 has 96 divisors (see below), whose sum is σ = 2687014544832. Its totient is φ = 246297173760.

The previous prime is 1021120101203. The next prime is 1021120101227. The reversal of 1021120101210 is 121010211201.

It is a super-2 number, since 2×1021120101210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 13029262 + ... + 13107398.

It is an arithmetic number, because the mean of its divisors is an integer number (27989734842).

Almost surely, 2^{1021120101210} is an apocalyptic number.

1021120101210 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 1021120101210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343507272416).

1021120101210 is an abundant number, since it is smaller than the sum of its proper divisors (1665894443622).

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

1021120101210 is a wasteful number, since it uses less digits than its factorization.

1021120101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78556 (or 78357 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021120101210 its reverse (121010211201), we get a palindrome (1142130312411).

The spelling of 1021120101210 in words is "one trillion, twenty-one billion, one hundred twenty million, one hundred one thousand, two hundred ten".