3102250021 has 12 divisors (see below), whose sum is σ = 3365249220. Its totient is φ = 2858494080.

The previous prime is 3102250009. The next prime is 3102250027. The reversal of 3102250021 is 1200522013.

It can be written as a sum of positive squares in 6 ways, for example, as 1636202500 + 1466047521 = 40450^2 + 38289^2 .

It is not a de Polignac number, because 3102250021 - 2¹⁹ = 3101725733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3102249977 and 3102250004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102250027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80031 + ... + 112291.

It is an arithmetic number, because the mean of its divisors is an integer number (280437435).

Almost surely, 2^3102250021 is an apocalyptic number.

It is an amenable number.

3102250021 is a deficient number, since it is larger than the sum of its proper divisors (262999199).

3102250021 is a wasteful number, since it uses less digits than its factorization.

3102250021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32856 (or 32843 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3102250021 is about 55697.8457482872. The cubic root of 3102250021 is about 1458.4524198705.

Adding to 3102250021 its reverse (1200522013), we get a palindrome (4302772034).

The spelling of 3102250021 in words is "three billion, one hundred two million, two hundred fifty thousand, twenty-one".