1021102021210 has 16 divisors (see below), whose sum is σ = 1849690543176. Its totient is φ = 405839274048.

The previous prime is 1021102021207. The next prime is 1021102021213. The reversal of 1021102021210 is 121202011201.

It is an interprime number because it is at equal distance from previous prime (1021102021207) and next prime (1021102021213).

It can be written as a sum of positive squares in 4 ways, for example, as 503002937529 + 518099083681 = 709227^2 + 719791^2 .

It is not an unprimeable number, because it can be changed into a prime (1021102021213) 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, 325190157 + ... + 325193296.

Almost surely, 2^{1021102021210} is an apocalyptic number.

1021102021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021102021210 is a deficient number, since it is larger than the sum of its proper divisors (828588521966).

1021102021210 is a wasteful number, since it uses less digits than its factorization.

1021102021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650383617.

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

Adding to 1021102021210 its reverse (121202011201), we get a palindrome (1142304032411).

The spelling of 1021102021210 in words is "one trillion, twenty-one billion, one hundred two million, twenty-one thousand, two hundred ten".