1021020223210 has 64 divisors (see below), whose sum is σ = 2095828009632. Its totient is φ = 354782969856.

The previous prime is 1021020223123. The next prime is 1021020223231. The reversal of 1021020223210 is 123220201201.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 59147699209 + 961872524001 = 243203^2 + 980751^2 .

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 31 ways as a sum of consecutive naturals, for example, 44049184 + ... + 44072356.

Almost surely, 2^{1021020223210} is an apocalyptic number.

1021020223210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021020223210 is an abundant number, since it is smaller than the sum of its proper divisors (1074807786422).

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

1021020223210 is a wasteful number, since it uses less digits than its factorization.

1021020223210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43147.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1021020223210 its reverse (123220201201), we get a palindrome (1144240424411).

The spelling of 1021020223210 in words is "one trillion, twenty-one billion, twenty million, two hundred twenty-three thousand, two hundred ten".