2661022243131 has 8 divisors (see below), whose sum is σ = 4054891037184. Its totient is φ = 1520584138920.

The previous prime is 2661022243123. The next prime is 2661022243163. The reversal of 2661022243131 is 1313422201662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2661022243131 - 2³ = 2661022243123 is a prime.

It is a super-2 number, since 2×2661022243131² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2661022243092 and 2661022243101.

It is not an unprimeable number, because it can be changed into a prime (2661022243171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63357672435 + ... + 63357672476.

It is an arithmetic number, because the mean of its divisors is an integer number (506861379648).

Almost surely, 2^{2661022243131} is an apocalyptic number.

2661022243131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2661022243131 is a deficient number, since it is larger than the sum of its proper divisors (1393868794053).

2661022243131 is a wasteful number, since it uses less digits than its factorization.

2661022243131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126715344921.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 2661022243131 its reverse (1313422201662), we get a palindrome (3974444444793).

The spelling of 2661022243131 in words is "two trillion, six hundred sixty-one billion, twenty-two million, two hundred forty-three thousand, one hundred thirty-one".