120021221210111 has 64 divisors (see below), whose sum is σ = 139146376642560. Its totient is φ = 102672781685760.

The previous prime is 120021221210053. The next prime is 120021221210123. The reversal of 120021221210111 is 111012122120021.

It is not a de Polignac number, because 120021221210111 - 2⁴² = 115623174699007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120021221210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021221210161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 414523730 + ... + 414813168.

It is an arithmetic number, because the mean of its divisors is an integer number (2174162135040).

Almost surely, 2^{120021221210111} is an apocalyptic number.

120021221210111 is a deficient number, since it is larger than the sum of its proper divisors (19125155432449).

120021221210111 is a wasteful number, since it uses less digits than its factorization.

120021221210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289856.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120021221210111 its reverse (111012122120021), we get a palindrome (231033343330132).

The spelling of 120021221210111 in words is "one hundred twenty trillion, twenty-one billion, two hundred twenty-one million, two hundred ten thousand, one hundred eleven".