2106261421231 has 8 divisors (see below), whose sum is σ = 2302702458624. Its totient is φ = 1910647504920.

The previous prime is 2106261421223. The next prime is 2106261421241. The reversal of 2106261421231 is 1321241626012.

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

It is not a de Polignac number, because 2106261421231 - 2³ = 2106261421223 is a prime.

It is a super-2 number, since 2×2106261421231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2106261421193 and 2106261421202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106261421241) 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, 206774941 + ... + 206785126.

It is an arithmetic number, because the mean of its divisors is an integer number (287837807328).

Almost surely, 2^{2106261421231} is an apocalyptic number.

2106261421231 is a deficient number, since it is larger than the sum of its proper divisors (196441037393).

2106261421231 is a wasteful number, since it uses less digits than its factorization.

2106261421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413560541.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 2106261421231 in words is "two trillion, one hundred six billion, two hundred sixty-one million, four hundred twenty-one thousand, two hundred thirty-one".