22215521010149 has 2 divisors, whose sum is σ = 22215521010150. Its totient is φ = 22215521010148.

The previous prime is 22215521010143. The next prime is 22215521010167. The reversal of 22215521010149 is 94101012551222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14713438356100 + 7502082654049 = 3835810^2 + 2738993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22215521010149 is a prime.

It is a super-2 number, since 2×22215521010149² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22215521010143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107760505074 + 11107760505075.

It is an arithmetic number, because the mean of its divisors is an integer number (11107760505075).

Almost surely, 2^{22215521010149} is an apocalyptic number.

It is an amenable number.

22215521010149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215521010149 is an equidigital number, since it uses as much as digits as its factorization.

22215521010149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 22215521010149 in words is "twenty-two trillion, two hundred fifteen billion, five hundred twenty-one million, ten thousand, one hundred forty-nine".