221211100151 has 2 divisors, whose sum is σ = 221211100152. Its totient is φ = 221211100150.

The previous prime is 221211100147. The next prime is 221211100157. The reversal of 221211100151 is 151001112122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221211100151 - 2² = 221211100147 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221211100157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605550075 + 110605550076.

It is an arithmetic number, because the mean of its divisors is an integer number (110605550076).

Almost surely, 2^221211100151 is an apocalyptic number.

221211100151 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211100151 is an equidigital number, since it uses as much as digits as its factorization.

221211100151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 221211100151 its reverse (151001112122), we get a palindrome (372212212273).

The spelling of 221211100151 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred thousand, one hundred fifty-one".