2201211042121 has 18 divisors (see below), whose sum is σ = 2772712530702. Its totient is φ = 1741617521280.

The previous prime is 2201211042101. The next prime is 2201211042133. The reversal of 2201211042121 is 1212401121022.

It can be written as a sum of positive squares in 3 ways, for example, as 278720643600 + 1922490398521 = 527940^2 + 1386539^2 .

It is not a de Polignac number, because 2201211042121 - 2¹⁹ = 2201210517833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201211042101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 132899040 + ... + 132915601.

It is an arithmetic number, because the mean of its divisors is an integer number (154039585039).

Almost surely, 2^{2201211042121} is an apocalyptic number.

It is an amenable number.

2201211042121 is a deficient number, since it is larger than the sum of its proper divisors (571501488581).

2201211042121 is a wasteful number, since it uses less digits than its factorization.

2201211042121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265814681 (or 265814661 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2201211042121 its reverse (1212401121022), we get a palindrome (3413612163143).

The spelling of 2201211042121 in words is "two trillion, two hundred one billion, two hundred eleven million, forty-two thousand, one hundred twenty-one".