20100210128 has 20 divisors (see below), whose sum is σ = 39016159428. Its totient is φ = 10031523840.

The previous prime is 20100210127. The next prime is 20100210131. The reversal of 20100210128 is 82101200102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7301360704 + 12798849424 = 85448^2 + 113132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100210127) 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, 1152401 + ... + 1169712.

Almost surely, 2^20100210128 is an apocalyptic number.

It is an amenable number.

20100210128 is a deficient number, since it is larger than the sum of its proper divisors (18915949300).

20100210128 is a wasteful number, since it uses less digits than its factorization.

20100210128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322662 (or 2322656 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The spelling of 20100210128 in words is "twenty billion, one hundred million, two hundred ten thousand, one hundred twenty-eight".