21122210211043 has 2 divisors, whose sum is σ = 21122210211044. Its totient is φ = 21122210211042.

The previous prime is 21122210210963. The next prime is 21122210211059. The reversal of 21122210211043 is 34011201222112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122210211043 - 2⁹ = 21122210210531 is a prime.

It is a super-2 number, since 2×21122210211043² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21122210211083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561105105521 + 10561105105522.

It is an arithmetic number, because the mean of its divisors is an integer number (10561105105522).

Almost surely, 2^{21122210211043} is an apocalyptic number.

21122210211043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122210211043 is an equidigital number, since it uses as much as digits as its factorization.

21122210211043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21122210211043 its reverse (34011201222112), we get a palindrome (55133411433155).

The spelling of 21122210211043 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, two hundred eleven thousand, forty-three".