2201121100121 has 16 divisors (see below), whose sum is σ = 2247417048960. Its totient is φ = 2155157623680.

The previous prime is 2201121100097. The next prime is 2201121100127. The reversal of 2201121100121 is 1210011211022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201121100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2201121100096 and 2201121100105.

It is not an unprimeable number, because it can be changed into a prime (2201121100127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174036620 + ... + 174049266.

It is an arithmetic number, because the mean of its divisors is an integer number (140463565560).

Almost surely, 2^{2201121100121} is an apocalyptic number.

It is an amenable number.

2201121100121 is a deficient number, since it is larger than the sum of its proper divisors (46295948839).

2201121100121 is a wasteful number, since it uses less digits than its factorization.

2201121100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25504.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2201121100121 its reverse (1210011211022), we get a palindrome (3411132311143).

It can be divided in two parts, 22011211001 and 21, that added together give a palindrome (22011211022).

The spelling of 2201121100121 in words is "two trillion, two hundred one billion, one hundred twenty-one million, one hundred thousand, one hundred twenty-one".