1021111101202 has 8 divisors (see below), whose sum is σ = 1535772997836. Its totient is φ = 509186768592.

The previous prime is 1021111101191. The next prime is 1021111101221. The reversal of 1021111101202 is 2021011111201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 896996515801 + 124114585401 = 947099^2 + 352299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1021111101202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684390073 + ... + 684391564.

Almost surely, 2^{1021111101202} is an apocalyptic number.

1021111101202 is a deficient number, since it is larger than the sum of its proper divisors (514661896634).

1021111101202 is a wasteful number, since it uses less digits than its factorization.

1021111101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368782012.

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

Adding to 1021111101202 its reverse (2021011111201), we get a palindrome (3042122212403).

Subtracting 1021111101202 from its reverse (2021011111201), we obtain a palindrome (999900009999).

The spelling of 1021111101202 in words is "one trillion, twenty-one billion, one hundred eleven million, one hundred one thousand, two hundred two".