2120401501 has 16 divisors (see below), whose sum is σ = 2256408000. Its totient is φ = 1986940800.

The previous prime is 2120401489. The next prime is 2120401511. The reversal of 2120401501 is 1051040212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120401501 is a prime.

It is a super-2 number, since 2×2120401501² = 8992205050886106002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120401511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867441 + ... + 869881.

It is an arithmetic number, because the mean of its divisors is an integer number (141025500).

Almost surely, 2^2120401501 is an apocalyptic number.

It is an amenable number.

2120401501 is a deficient number, since it is larger than the sum of its proper divisors (136006499).

2120401501 is a wasteful number, since it uses less digits than its factorization.

2120401501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2120401501 is about 46047.8175487178. The cubic root of 2120401501 is about 1284.7127502184.

Adding to 2120401501 its reverse (1051040212), we get a palindrome (3171441713).

The spelling of 2120401501 in words is "two billion, one hundred twenty million, four hundred one thousand, five hundred one".