221021021102001 has 8 divisors (see below), whose sum is σ = 295051036637664. Its totient is φ = 147169176483840.

The previous prime is 221021021101927. The next prime is 221021021102009. The reversal of 221021021102001 is 100201120120122.

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

It is not a de Polignac number, because 221021021102001 - 2⁴³ = 212224928079793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221021021102009) 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, 44542726480 + ... + 44542731441.

It is an arithmetic number, because the mean of its divisors is an integer number (36881379579708).

Almost surely, 2^{221021021102001} is an apocalyptic number.

It is an amenable number.

221021021102001 is a deficient number, since it is larger than the sum of its proper divisors (74030015535663).

221021021102001 is an equidigital number, since it uses as much as digits as its factorization.

221021021102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89085458751.

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

Adding to 221021021102001 its reverse (100201120120122), we get a palindrome (321222141222123).

The spelling of 221021021102001 in words is "two hundred twenty-one trillion, twenty-one billion, twenty-one million, one hundred two thousand, one".