2122101111021 has 16 divisors (see below), whose sum is σ = 2978423370240. Its totient is φ = 1340258255280.

The previous prime is 2122101111017. The next prime is 2122101111079. The reversal of 2122101111021 is 1201111012212.

It is a happy number.

It is not a de Polignac number, because 2122101111021 - 2² = 2122101111017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122101118021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6111486 + ... + 6449376.

It is an arithmetic number, because the mean of its divisors is an integer number (186151460640).

Almost surely, 2^{2122101111021} is an apocalyptic number.

It is an amenable number.

2122101111021 is a deficient number, since it is larger than the sum of its proper divisors (856322259219).

2122101111021 is a wasteful number, since it uses less digits than its factorization.

2122101111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448096.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2122101111021 its reverse (1201111012212), we get a palindrome (3323212123233).

It can be divided in two parts, 212210 and 1111021, that added together give a palindrome (1323231).

The spelling of 2122101111021 in words is "two trillion, one hundred twenty-two billion, one hundred one million, one hundred eleven thousand, twenty-one".