2121203011 has 8 divisors (see below), whose sum is σ = 2133208064. Its totient is φ = 2109230280.

The previous prime is 2121202961. The next prime is 2121203017. The reversal of 2121203011 is 1103021212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121203011 - 2¹⁵ = 2121170243 is a prime.

It is a super-2 number, since 2×2121203011² = 8999004427750932242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121202982 and 2121203000.

It is not an unprimeable number, because it can be changed into a prime (2121203017) 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, 130126 + ... + 145516.

It is an arithmetic number, because the mean of its divisors is an integer number (266651008).

Almost surely, 2^2121203011 is an apocalyptic number.

2121203011 is a deficient number, since it is larger than the sum of its proper divisors (12005053).

2121203011 is a wasteful number, since it uses less digits than its factorization.

2121203011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16161.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2121203011 is about 46056.5197447658. The cubic root of 2121203011 is about 1284.8746032763.

Adding to 2121203011 its reverse (1103021212), we get a palindrome (3224224223).

The spelling of 2121203011 in words is "two billion, one hundred twenty-one million, two hundred three thousand, eleven".