242221011 has 12 divisors (see below), whose sum is σ = 333719496. Its totient is φ = 156269760.

The previous prime is 242220991. The next prime is 242221051. The reversal of 242221011 is 110122242.

It is not a de Polignac number, because 242221011 - 2²¹ = 240123859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242221051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39126 + ... + 44891.

It is an arithmetic number, because the mean of its divisors is an integer number (27809958).

Almost surely, 2^242221011 is an apocalyptic number.

242221011 is a deficient number, since it is larger than the sum of its proper divisors (91498485).

242221011 is an equidigital number, since it uses as much as digits as its factorization.

242221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84082 (or 84051 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 242221011 is about 15563.4511275617. The cubic root of 242221011 is about 623.3576172936.

Adding to 242221011 its reverse (110122242), we get a palindrome (352343253).

It can be divided in two parts, 24222 and 1011, that multiplied together give a palindrome (24488442).

The spelling of 242221011 in words is "two hundred forty-two million, two hundred twenty-one thousand, eleven".