221020001101101 has 32 divisors (see below), whose sum is σ = 309699460667520. Its totient is φ = 140028967620864.

The previous prime is 221020001101051. The next prime is 221020001101169. The reversal of 221020001101101 is 101101100020122.

It is not a de Polignac number, because 221020001101101 - 2²⁶ = 221019933992237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020001301101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 973144111 + ... + 973371203.

It is an arithmetic number, because the mean of its divisors is an integer number (9678108145860).

Almost surely, 2^{221020001101101} is an apocalyptic number.

It is an amenable number.

221020001101101 is a deficient number, since it is larger than the sum of its proper divisors (88679459566419).

221020001101101 is a wasteful number, since it uses less digits than its factorization.

221020001101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431085.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221020001101101 its reverse (101101100020122), we get a palindrome (322121101121223).

The spelling of 221020001101101 in words is "two hundred twenty-one trillion, twenty billion, one million, one hundred one thousand, one hundred one".