221020122100001 has 8 divisors (see below), whose sum is σ = 263576791572864. Its totient is φ = 181209044206080.

The previous prime is 221020122099947. The next prime is 221020122100009. The reversal of 221020122100001 is 100001221020122.

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 221020122100001 - 2⁶ = 221020122099937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221020122100009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686397894560 + ... + 686397894881.

It is an arithmetic number, because the mean of its divisors is an integer number (32947098946608).

Almost surely, 2^{221020122100001} is an apocalyptic number.

It is an amenable number.

221020122100001 is a deficient number, since it is larger than the sum of its proper divisors (42556669472863).

221020122100001 is a wasteful number, since it uses less digits than its factorization.

221020122100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372795789471.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221020122100001 its reverse (100001221020122), we get a palindrome (321021343120123).

It can be divided in two parts, 221020122 and 100001, that multiplied together give a palindrome (22102233220122).

The spelling of 221020122100001 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty-two million, one hundred thousand, one".