120101011111001 has 4 divisors (see below), whose sum is σ = 123975237275904. Its totient is φ = 116226784946100.

The previous prime is 120101011110943. The next prime is 120101011111019. The reversal of 120101011111001 is 100111110101021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120101011111001 - 2⁴⁶ = 49732266933337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120101011116001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937113082405 + ... + 1937113082466.

It is an arithmetic number, because the mean of its divisors is an integer number (30993809318976).

Almost surely, 2^{120101011111001} is an apocalyptic number.

It is an amenable number.

120101011111001 is a deficient number, since it is larger than the sum of its proper divisors (3874226164903).

120101011111001 is an equidigital number, since it uses as much as digits as its factorization.

120101011111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874226164902.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 120101011111001 its reverse (100111110101021), we get a palindrome (220212121212022).

The spelling of 120101011111001 in words is "one hundred twenty trillion, one hundred one billion, eleven million, one hundred eleven thousand, one".