120121221101 has 16 divisors (see below), whose sum is σ = 143524153344. Its totient is φ = 98296103664.

The previous prime is 120121221071. The next prime is 120121221113. The reversal of 120121221101 is 101122121021.

It is a cyclic number.

It is not a de Polignac number, because 120121221101 - 2⁶ = 120121221037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121221301) 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, 629081 + ... + 797486.

It is an arithmetic number, because the mean of its divisors is an integer number (8970259584).

Almost surely, 2^120121221101 is an apocalyptic number.

It is an amenable number.

120121221101 is a deficient number, since it is larger than the sum of its proper divisors (23402932243).

120121221101 is a wasteful number, since it uses less digits than its factorization.

120121221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427120.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120121221101 its reverse (101122121021), we get a palindrome (221243342122).

The spelling of 120121221101 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred one".