2100023501 has 2 divisors, whose sum is σ = 2100023502. Its totient is φ = 2100023500.

The previous prime is 2100023479. The next prime is 2100023503. The reversal of 2100023501 is 1053200012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2100022276 + 1225 = 45826^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100023501 - 2⁶ = 2100023437 is a prime.

Together with 2100023503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100023503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050011750 + 1050011751.

It is an arithmetic number, because the mean of its divisors is an integer number (1050011751).

Almost surely, 2^2100023501 is an apocalyptic number.

It is an amenable number.

2100023501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100023501 is an equidigital number, since it uses as much as digits as its factorization.

2100023501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2100023501 is about 45826.0133657729. The cubic root of 2100023501 is about 1280.5839419365.

Adding to 2100023501 its reverse (1053200012), we get a palindrome (3153223513).

The spelling of 2100023501 in words is "two billion, one hundred million, twenty-three thousand, five hundred one".