11221501051 has 2 divisors, whose sum is σ = 11221501052. Its totient is φ = 11221501050.

The previous prime is 11221501021. The next prime is 11221501091. The reversal of 11221501051 is 15010512211.

It is a weak prime.

It is an emirp because it is prime and its reverse (15010512211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11221501051 - 2⁷ = 11221500923 is a prime.

It is not a weakly prime, because it can be changed into another prime (11221501021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610750525 + 5610750526.

It is an arithmetic number, because the mean of its divisors is an integer number (5610750526).

Almost surely, 2^11221501051 is an apocalyptic number.

11221501051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221501051 is an equidigital number, since it uses as much as digits as its factorization.

11221501051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 19.

The spelling of 11221501051 in words is "eleven billion, two hundred twenty-one million, five hundred one thousand, fifty-one".