2131022543100 has 288 divisors, whose sum is σ = 6878949719040. Its totient is φ = 505015680000.

The previous prime is 2131022543093. The next prime is 2131022543107. The reversal of 2131022543100 is 13452201312.

It is an interprime number because it is at equal distance from previous prime (2131022543093) and next prime (2131022543107).

It is a super-2 number, since 2×2131022543100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131022543107) 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, 26290234 + ... + 26371166.

It is an arithmetic number, because the mean of its divisors is an integer number (23885242080).

Almost surely, 2^{2131022543100} is an apocalyptic number.

2131022543100 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 2131022543100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3439474859520).

2131022543100 is an abundant number, since it is smaller than the sum of its proper divisors (4747927175940).

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

2131022543100 is a wasteful number, since it uses less digits than its factorization.

2131022543100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81141 (or 81134 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 2131022543100 its reverse (13452201312), we get a palindrome (2144474744412).

The spelling of 2131022543100 in words is "two trillion, one hundred thirty-one billion, twenty-two million, five hundred forty-three thousand, one hundred".