2100423502120 has 64 divisors (see below), whose sum is σ = 4855598680320. Its totient is φ = 817139199744.

The previous prime is 2100423502117. The next prime is 2100423502159. The reversal of 2100423502120 is 212053240012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100423502091 and 2100423502100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3484599 + ... + 4042681.

It is an arithmetic number, because the mean of its divisors is an integer number (75868729380).

Almost surely, 2^{2100423502120} is an apocalyptic number.

2100423502120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100423502120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2427799340160).

2100423502120 is an abundant number, since it is smaller than the sum of its proper divisors (2755175178200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100423502120 is a wasteful number, since it uses less digits than its factorization.

2100423502120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560674 (or 560670 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 2100423502120 its reverse (212053240012), we get a palindrome (2312476742132).

The spelling of 2100423502120 in words is "two trillion, one hundred billion, four hundred twenty-three million, five hundred two thousand, one hundred twenty".