20110021230242 has 4 divisors (see below), whose sum is σ = 30165031845366. Its totient is φ = 10055010615120.

The previous prime is 20110021230223. The next prime is 20110021230269. The reversal of 20110021230242 is 24203212001102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18377588774281 + 1732432455961 = 4286909^2 + 1316219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027505307559 + ... + 5027505307562.

Almost surely, 2^{20110021230242} is an apocalyptic number.

20110021230242 is a deficient number, since it is larger than the sum of its proper divisors (10055010615124).

20110021230242 is a wasteful number, since it uses less digits than its factorization.

20110021230242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055010615123.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20110021230242 its reverse (24203212001102), we get a palindrome (44313233231344).

The spelling of 20110021230242 in words is "twenty trillion, one hundred ten billion, twenty-one million, two hundred thirty thousand, two hundred forty-two".