2101133221221 has 32 divisors (see below), whose sum is σ = 2883351002112. Its totient is φ = 1360518494720.

The previous prime is 2101133221219. The next prime is 2101133221237. The reversal of 2101133221221 is 1221223311012.

It is not a de Polignac number, because 2101133221221 - 2¹ = 2101133221219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101133221241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6072346 + ... + 6409028.

It is an arithmetic number, because the mean of its divisors is an integer number (90104718816).

Almost surely, 2^{2101133221221} is an apocalyptic number.

It is an amenable number.

2101133221221 is a deficient number, since it is larger than the sum of its proper divisors (782217780891).

2101133221221 is a wasteful number, since it uses less digits than its factorization.

2101133221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337193.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2101133221221 its reverse (1221223311012), we get a palindrome (3322356532233).

The spelling of 2101133221221 in words is "two trillion, one hundred one billion, one hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty-one".