1021112020210 has 16 divisors (see below), whose sum is σ = 1838015144856. Its totient is φ = 408441806208.

The previous prime is 1021112020207. The next prime is 1021112020211. The reversal of 1021112020210 is 120202111201.

It can be written as a sum of positive squares in 4 ways, for example, as 1014627100369 + 6484919841 = 1007287^2 + 80529^2 .

It is not an unprimeable number, because it can be changed into a prime (1021112020211) 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, 1499404 + ... + 2071336.

Almost surely, 2^{1021112020210} is an apocalyptic number.

1021112020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021112020210 is a deficient number, since it is larger than the sum of its proper divisors (816903124646).

1021112020210 is a wasteful number, since it uses less digits than its factorization.

1021112020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750477.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021112020210 its reverse (120202111201), we get a palindrome (1141314131411).

Subtracting from 1021112020210 its reverse (120202111201), we obtain a palindrome (900909909009).

The spelling of 1021112020210 in words is "one trillion, twenty-one billion, one hundred twelve million, twenty thousand, two hundred ten".