1002201121010 has 16 divisors (see below), whose sum is σ = 1804203034200. Its totient is φ = 400826889216.

The previous prime is 1002201121007. The next prime is 1002201121039. The reversal of 1002201121010 is 101211022001.

It can be written as a sum of positive squares in 4 ways, for example, as 934534024369 + 67667096641 = 966713^2 + 260129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1002201120982 and 1002201121000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6616265 + ... + 6766044.

Almost surely, 2^{1002201121010} is an apocalyptic number.

1002201121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002201121010 is a deficient number, since it is larger than the sum of its proper divisors (802001913190).

1002201121010 is a wasteful number, since it uses less digits than its factorization.

1002201121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13389805.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1002201121010 its reverse (101211022001), we get a palindrome (1103412143011).

Subtracting from 1002201121010 its reverse (101211022001), we obtain a palindrome (900990099009).

It can be divided in two parts, 1002201 and 121010, that added together give a palindrome (1123211).

The spelling of 1002201121010 in words is "one trillion, two billion, two hundred one million, one hundred twenty-one thousand, ten".