120020010121001 has 4 divisors (see below), whose sum is σ = 127080010716372. Its totient is φ = 112960009525632.

The previous prime is 120020010120977. The next prime is 120020010121049. The reversal of 120020010121001 is 100121010020021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37781429155600 + 82238580965401 = 6146660^2 + 9068549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120020010121001 is a prime.

It is a super-2 number, since 2×120020010121001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120020010121901) 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, 3530000297660 + ... + 3530000297693.

It is an arithmetic number, because the mean of its divisors is an integer number (31770002679093).

Almost surely, 2^{120020010121001} is an apocalyptic number.

It is an amenable number.

120020010121001 is a deficient number, since it is larger than the sum of its proper divisors (7060000595371).

120020010121001 is an equidigital number, since it uses as much as digits as its factorization.

120020010121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060000595370.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120020010121001 its reverse (100121010020021), we get a palindrome (220141020141022).

The spelling of 120020010121001 in words is "one hundred twenty trillion, twenty billion, ten million, one hundred twenty-one thousand, one".