221210404012151 has 2 divisors, whose sum is σ = 221210404012152. Its totient is φ = 221210404012150.

The previous prime is 221210404012121. The next prime is 221210404012177. The reversal of 221210404012151 is 151210404012122.

It is an a-pointer prime, because the next prime (221210404012177) can be obtained adding 221210404012151 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221210404012151 - 2¹⁰ = 221210404011127 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221210404012151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221210404012121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605202006075 + 110605202006076.

It is an arithmetic number, because the mean of its divisors is an integer number (110605202006076).

Almost surely, 2^{221210404012151} is an apocalyptic number.

221210404012151 is a deficient number, since it is larger than the sum of its proper divisors (1).

221210404012151 is an equidigital number, since it uses as much as digits as its factorization.

221210404012151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 221210404012151 its reverse (151210404012122), we get a palindrome (372420808024273).

The spelling of 221210404012151 in words is "two hundred twenty-one trillion, two hundred ten billion, four hundred four million, twelve thousand, one hundred fifty-one".