2131121242986 has 8 divisors (see below), whose sum is σ = 4262242485984. Its totient is φ = 710373747660.

The previous prime is 2131121242949. The next prime is 2131121242997. The reversal of 2131121242986 is 6892421211312.

It is a happy number.

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

2131121242986 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177593436910 + ... + 177593436921.

It is an arithmetic number, because the mean of its divisors is an integer number (532780310748).

Almost surely, 2^{2131121242986} is an apocalyptic number.

2131121242986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2131121242986 is a wasteful number, since it uses less digits than its factorization.

2131121242986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355186873836.

The product of its digits is 82944, while the sum is 42.

The spelling of 2131121242986 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-one million, two hundred forty-two thousand, nine hundred eighty-six".