2220121211011 has 4 divisors (see below), whose sum is σ = 2421950412024. Its totient is φ = 2018292010000.

The previous prime is 2220121210987. The next prime is 2220121211023. The reversal of 2220121211011 is 1101121210222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2220121211011 - 2¹⁵ = 2220121178243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2220121211411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100914600490 + ... + 100914600511.

It is an arithmetic number, because the mean of its divisors is an integer number (605487603006).

Almost surely, 2^{2220121211011} is an apocalyptic number.

2220121211011 is a deficient number, since it is larger than the sum of its proper divisors (201829201013).

2220121211011 is a wasteful number, since it uses less digits than its factorization.

2220121211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201829201012.

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

Adding to 2220121211011 its reverse (1101121210222), we get a palindrome (3321242421233).

It can be divided in two parts, 22201 and 21211011, that added together give a palindrome (21233212).

The spelling of 2220121211011 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred eleven thousand, eleven".