2150501021 has 2 divisors, whose sum is σ = 2150501022. Its totient is φ = 2150501020.

The previous prime is 2150501011. The next prime is 2150501029. The reversal of 2150501021 is 1201050512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1849860100 + 300640921 = 43010^2 + 17339^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150501021 - 2¹⁸ = 2150238877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2150501029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075250510 + 1075250511.

It is an arithmetic number, because the mean of its divisors is an integer number (1075250511).

Almost surely, 2^2150501021 is an apocalyptic number.

It is an amenable number.

2150501021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150501021 is an equidigital number, since it uses as much as digits as its factorization.

2150501021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 2150501021 is about 46373.4948111526. The cubic root of 2150501021 is about 1290.7631285784.

Adding to 2150501021 its reverse (1201050512), we get a palindrome (3351551533).

The spelling of 2150501021 in words is "two billion, one hundred fifty million, five hundred one thousand, twenty-one".