2122857000 has 384 divisors, whose sum is σ = 8033800320. Its totient is φ = 501120000.

The previous prime is 2122856999. The next prime is 2122857001. The reversal of 2122857000 is 7582212.

It is an interprime number because it is at equal distance from previous prime (2122856999) and next prime (2122857001).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2122857001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4058739 + ... + 4059261.

It is an arithmetic number, because the mean of its divisors is an integer number (20921355).

Almost surely, 2^2122857000 is an apocalyptic number.

2122857000 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 2122857000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4016900160).

2122857000 is an abundant number, since it is smaller than the sum of its proper divisors (5910943320).

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

2122857000 is a wasteful number, since it uses less digits than its factorization.

2122857000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2122857000 is about 46074.4723247049. The cubic root of 2122857000 is about 1285.2084729920.

The spelling of 2122857000 in words is "two billion, one hundred twenty-two million, eight hundred fifty-seven thousand".