2101194420 has 192 divisors, whose sum is σ = 6900768000. Its totient is φ = 473001984.

The previous prime is 2101194397. The next prime is 2101194421. The reversal of 2101194420 is 244911012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101194421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 427336 + ... + 432224.

It is an arithmetic number, because the mean of its divisors is an integer number (35941500).

Almost surely, 2^2101194420 is an apocalyptic number.

2101194420 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 2101194420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3450384000).

2101194420 is an abundant number, since it is smaller than the sum of its proper divisors (4799573580).

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

2101194420 is a wasteful number, since it uses less digits than its factorization.

2101194420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962 (or 4960 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2101194420 is about 45838.7872876236. The cubic root of 2101194420 is about 1280.8219045859.

The spelling of 2101194420 in words is "two billion, one hundred one million, one hundred ninety-four thousand, four hundred twenty".