120111001002021 has 4 divisors (see below), whose sum is σ = 160148001336032. Its totient is φ = 80074000668012.

The previous prime is 120111001002001. The next prime is 120111001002049. The reversal of 120111001002021 is 120200100111021.

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 de Polignac number, because none of the positive numbers 2^k-120111001002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120111001001988 and 120111001002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111001002001) 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, 20018500167001 + ... + 20018500167006.

It is an arithmetic number, because the mean of its divisors is an integer number (40037000334008).

Almost surely, 2^{120111001002021} is an apocalyptic number.

It is an amenable number.

120111001002021 is a deficient number, since it is larger than the sum of its proper divisors (40037000334011).

120111001002021 is an equidigital number, since it uses as much as digits as its factorization.

120111001002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40037000334010.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120111001002021 its reverse (120200100111021), we get a palindrome (240311101113042).

The spelling of 120111001002021 in words is "one hundred twenty trillion, one hundred eleven billion, one million, two thousand, twenty-one".