1021212102210 has 80 divisors (see below), whose sum is σ = 2604095415936. Its totient is φ = 256303585024.

The previous prime is 1021212102203. The next prime is 1021212102319. The reversal of 1021212102210 is 122012121201.

1021212102210 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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1021212102210.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2301847 + ... + 2709413.

Almost surely, 2^{1021212102210} is an apocalyptic number.

1021212102210 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 1021212102210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302047707968).

1021212102210 is an abundant number, since it is smaller than the sum of its proper divisors (1582883313726).

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

1021212102210 is an frugal number, since it uses more digits than its factorization.

1021212102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407645 (or 407594 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021212102210 its reverse (122012121201), we get a palindrome (1143224223411).

The spelling of 1021212102210 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred two thousand, two hundred ten".