2211231000 has 256 divisors, whose sum is σ = 7733905920. Its totient is φ = 521280000.

The previous prime is 2211230999. The next prime is 2211231013. The reversal of 2211231000 is 1321122.

It is a super-2 number, since 2×2211231000² = 9779085070722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1220095 + ... + 1221905.

It is an arithmetic number, because the mean of its divisors is an integer number (30210570).

Almost surely, 2^2211231000 is an apocalyptic number.

2211231000 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 2211231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3866952960).

2211231000 is an abundant number, since it is smaller than the sum of its proper divisors (5522674920).

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

2211231000 is a wasteful number, since it uses less digits than its factorization.

2211231000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2211231000 is about 47023.7280529734. The cubic root of 2211231000 is about 1302.8008645253.

Adding to 2211231000 its reverse (1321122), we get a palindrome (2212552122).

The spelling of 2211231000 in words is "two billion, two hundred eleven million, two hundred thirty-one thousand".