2221022121101 has 16 divisors (see below), whose sum is σ = 2547653627904. Its totient is φ = 1896731509104.

The previous prime is 2221022121091. The next prime is 2221022121137. The reversal of 2221022121101 is 1011212201222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221022121101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221022121101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221022121151) 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, 4904216 + ... + 5337918.

It is an arithmetic number, because the mean of its divisors is an integer number (159228351744).

Almost surely, 2^{2221022121101} is an apocalyptic number.

It is an amenable number.

2221022121101 is a deficient number, since it is larger than the sum of its proper divisors (326631506803).

2221022121101 is a wasteful number, since it uses less digits than its factorization.

2221022121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436400.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221022121101 its reverse (1011212201222), we get a palindrome (3232234322323).

The spelling of 2221022121101 in words is "two trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, one hundred one".