20842100210 has 16 divisors (see below), whose sum is σ = 39146901696. Its totient is φ = 7974368688.

The previous prime is 20842100143. The next prime is 20842100231. The reversal of 20842100210 is 1200124802.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45308684 + ... + 45309143.

It is an arithmetic number, because the mean of its divisors is an integer number (2446681356).

Almost surely, 2^20842100210 is an apocalyptic number.

20842100210 is a deficient number, since it is larger than the sum of its proper divisors (18304801486).

20842100210 is a wasteful number, since it uses less digits than its factorization.

20842100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90617857.

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 20842100210 in words is "twenty billion, eight hundred forty-two million, one hundred thousand, two hundred ten".