2221101020121 has 8 divisors (see below), whose sum is σ = 3063587614080. Its totient is φ = 1429674219792.

The previous prime is 2221101020069. The next prime is 2221101020123. The reversal of 2221101020121 is 1210201011222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221101020121 - 2⁷ = 2221101019993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221101020121.

It is not an unprimeable number, because it can be changed into a prime (2221101020123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12764948305 + ... + 12764948478.

It is an arithmetic number, because the mean of its divisors is an integer number (382948451760).

Almost surely, 2^{2221101020121} is an apocalyptic number.

It is an amenable number.

2221101020121 is a deficient number, since it is larger than the sum of its proper divisors (842486593959).

2221101020121 is a wasteful number, since it uses less digits than its factorization.

2221101020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25529896815.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2221101020121 its reverse (1210201011222), we get a palindrome (3431302031343).

The spelling of 2221101020121 in words is "two trillion, two hundred twenty-one billion, one hundred one million, twenty thousand, one hundred twenty-one".