2131995229452 has 192 divisors, whose sum is σ = 6171247595520. Its totient is φ = 631022745600.

The previous prime is 2131995229447. The next prime is 2131995229459. The reversal of 2131995229452 is 2549225991312.

2131995229452 is a `hidden beast` number, since 2 + 1 + 31 + 99 + 52 + 29 + 452 = 666.

It is a super-2 number, since 2×2131995229452² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2131995229459) 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, 13965052 + ... + 14116892.

It is an arithmetic number, because the mean of its divisors is an integer number (32141914560).

Almost surely, 2^{2131995229452} is an apocalyptic number.

2131995229452 is a gapful number since it is divisible by the number (22) 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 2131995229452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3085623797760).

2131995229452 is an abundant number, since it is smaller than the sum of its proper divisors (4039252366068).

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

2131995229452 is a wasteful number, since it uses less digits than its factorization.

2131995229452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152141 (or 152133 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 2131995229452 in words is "two trillion, one hundred thirty-one billion, nine hundred ninety-five million, two hundred twenty-nine thousand, four hundred fifty-two".