2121222100011 has 24 divisors (see below), whose sum is σ = 3290230193040. Its totient is φ = 1212063757632.

The previous prime is 2121222099853. The next prime is 2121222100057. The reversal of 2121222100011 is 1100012221212.

It is not a de Polignac number, because 2121222100011 - 2²³ = 2121213711403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121222100511) 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, 2531145 + ... + 3263301.

It is an arithmetic number, because the mean of its divisors is an integer number (137092924710).

Almost surely, 2^{2121222100011} is an apocalyptic number.

2121222100011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2121222100011 is a deficient number, since it is larger than the sum of its proper divisors (1169008093029).

2121222100011 is a wasteful number, since it uses less digits than its factorization.

2121222100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751883 (or 751876 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121222100011 its reverse (1100012221212), we get a palindrome (3221234321223).

The spelling of 2121222100011 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, eleven".