21106612151143 has 2 divisors, whose sum is σ = 21106612151144. Its totient is φ = 21106612151142.

The previous prime is 21106612150913. The next prime is 21106612151189. The reversal of 21106612151143 is 34115121660112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21106612151143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21106612151099 and 21106612151108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21106612181143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10553306075571 + 10553306075572.

It is an arithmetic number, because the mean of its divisors is an integer number (10553306075572).

Almost surely, 2^{21106612151143} is an apocalyptic number.

21106612151143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21106612151143 is an equidigital number, since it uses as much as digits as its factorization.

21106612151143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 21106612151143 in words is "twenty-one trillion, one hundred six billion, six hundred twelve million, one hundred fifty-one thousand, one hundred forty-three".