2121211202011 has 24 divisors (see below), whose sum is σ = 2362186229760. Its totient is φ = 1903082404080.

The previous prime is 2121211202003. The next prime is 2121211202021. The reversal of 2121211202011 is 1102021121212.

It is not a de Polignac number, because 2121211202011 - 2³ = 2121211202003 is a prime.

It is a super-3 number, since 3×2121211202011³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121211202021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21046440 + ... + 21146986.

It is an arithmetic number, because the mean of its divisors is an integer number (98424426240).

Almost surely, 2^{2121211202011} is an apocalyptic number.

2121211202011 is a deficient number, since it is larger than the sum of its proper divisors (240975027749).

2121211202011 is a wasteful number, since it uses less digits than its factorization.

2121211202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102855 (or 102844 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121211202011 its reverse (1102021121212), we get a palindrome (3223232323223).

The spelling of 2121211202011 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, two hundred two thousand, eleven".