1021102111210 has 16 divisors (see below), whose sum is σ = 1872662740776. Its totient is φ = 400734413248.

The previous prime is 1021102111153. The next prime is 1021102111213. The reversal of 1021102111210 is 121112011201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 609665817721 + 411436293489 = 780811^2 + 641433^2 .

It is not an unprimeable number, because it can be changed into a prime (1021102111213) 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, 963303349 + ... + 963304408.

Almost surely, 2^{1021102111210} is an apocalyptic number.

1021102111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021102111210 is a deficient number, since it is larger than the sum of its proper divisors (851560629566).

1021102111210 is a wasteful number, since it uses less digits than its factorization.

1021102111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926607817.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1021102111210 its reverse (121112011201), we get a palindrome (1142214122411).

The spelling of 1021102111210 in words is "one trillion, twenty-one billion, one hundred two million, one hundred eleven thousand, two hundred ten".