2221120121001 has 8 divisors (see below), whose sum is σ = 2961502699104. Its totient is φ = 1480742145120.

The previous prime is 2221120120993. The next prime is 2221120121021. The reversal of 2221120121001 is 1001210211222.

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

It is not a de Polignac number, because 2221120121001 - 2³ = 2221120120993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221120121021) 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, 203061 + ... + 2117421.

It is an arithmetic number, because the mean of its divisors is an integer number (370187837388).

Almost surely, 2^{2221120121001} is an apocalyptic number.

It is an amenable number.

2221120121001 is a deficient number, since it is larger than the sum of its proper divisors (740382578103).

2221120121001 is a wasteful number, since it uses less digits than its factorization.

2221120121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301111.

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

Adding to 2221120121001 its reverse (1001210211222), we get a palindrome (3222330332223).

The spelling of 2221120121001 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-one thousand, one".