120001220111138 has 16 divisors (see below), whose sum is σ = 180288307652544. Its totient is φ = 59905153168080.

The previous prime is 120001220111137. The next prime is 120001220111147. The reversal of 120001220111138 is 831111022100021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (120001220111137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2157068 + ... + 15641463.

It is an arithmetic number, because the mean of its divisors is an integer number (11268019228284).

Almost surely, 2^{120001220111138} is an apocalyptic number.

120001220111138 is a deficient number, since it is larger than the sum of its proper divisors (60287087541406).

120001220111138 is a wasteful number, since it uses less digits than its factorization.

120001220111138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17803897.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 120001220111138 its reverse (831111022100021), we get a palindrome (951112242211159).

The spelling of 120001220111138 in words is "one hundred twenty trillion, one billion, two hundred twenty million, one hundred eleven thousand, one hundred thirty-eight".