2121101110010 has 32 divisors (see below), whose sum is σ = 4042769612112. Its totient is φ = 798492590080.

The previous prime is 2121101109983. The next prime is 2121101110019. The reversal of 2121101110010 is 100111011212.

It can be written as a sum of positive squares in 8 ways, for example, as 1617218346601 + 503882763409 = 1271699^2 + 709847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121101109973 and 2121101110000.

It is not an unprimeable number, because it can be changed into a prime (2121101110019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3249530 + ... + 3847290.

Almost surely, 2^{2121101110010} is an apocalyptic number.

2121101110010 is a deficient number, since it is larger than the sum of its proper divisors (1921668502102).

2121101110010 is a wasteful number, since it uses less digits than its factorization.

2121101110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618658.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2121101110010 its reverse (100111011212), we get a palindrome (2221212121222).

The spelling of 2121101110010 in words is "two trillion, one hundred twenty-one billion, one hundred one million, one hundred ten thousand, ten".