221021000201109 has 16 divisors (see below), whose sum is σ = 310221501670080. Its totient is φ = 139584745555200.

The previous prime is 221021000201107. The next prime is 221021000201137. The reversal of 221021000201109 is 901102000120122.

It is not a de Polignac number, because 221021000201109 - 2¹ = 221021000201107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021000201107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102606612 + ... + 104738525.

It is an arithmetic number, because the mean of its divisors is an integer number (19388843854380).

Almost surely, 2^{221021000201109} is an apocalyptic number.

It is an amenable number.

221021000201109 is a deficient number, since it is larger than the sum of its proper divisors (89200501468971).

221021000201109 is a wasteful number, since it uses less digits than its factorization.

221021000201109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207363860.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 221021000201109 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred one thousand, one hundred nine".