2213122131000 has 384 divisors, whose sum is σ = 8164601452800. Its totient is φ = 536237280000.

The previous prime is 2213122130963. The next prime is 2213122131019. The reversal of 2213122131000 is 1312213122.

2213122131000 is a `hidden beast` number, since 2 + 2 + 131 + 221 + 310 + 0 + 0 = 666.

It is a super-2 number, since 2×2213122131000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 243436455 + ... + 243445545.

It is an arithmetic number, because the mean of its divisors is an integer number (21261982950).

Almost surely, 2^{2213122131000} is an apocalyptic number.

2213122131000 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 2213122131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4082300726400).

2213122131000 is an abundant number, since it is smaller than the sum of its proper divisors (5951479321800).

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

2213122131000 is a wasteful number, since it uses less digits than its factorization.

2213122131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11588 (or 11571 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2213122131000 its reverse (1312213122), we get a palindrome (2214434344122).

The spelling of 2213122131000 in words is "two trillion, two hundred thirteen billion, one hundred twenty-two million, one hundred thirty-one thousand".