221001102120001 has 8 divisors (see below), whose sum is σ = 253555461244800. Its totient is φ = 188692436272128.

The previous prime is 221001102119971. The next prime is 221001102120023. The reversal of 221001102120001 is 100021201100122.

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

It is a cyclic number.

It is not a de Polignac number, because 221001102120001 - 2¹⁷ = 221001101988929 is a prime.

It is a super-2 number, since 2×221001102120001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221001102120041) 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, 61423317301 + ... + 61423320898.

It is an arithmetic number, because the mean of its divisors is an integer number (31694432655600).

Almost surely, 2^{221001102120001} is an apocalyptic number.

It is an amenable number.

221001102120001 is a deficient number, since it is larger than the sum of its proper divisors (32554359124799).

221001102120001 is a wasteful number, since it uses less digits than its factorization.

221001102120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122846638463.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221001102120001 its reverse (100021201100122), we get a palindrome (321022303220123).

The spelling of 221001102120001 in words is "two hundred twenty-one trillion, one billion, one hundred two million, one hundred twenty thousand, one".