21223202333149 has 2 divisors, whose sum is σ = 21223202333150. Its totient is φ = 21223202333148.

The previous prime is 21223202333093. The next prime is 21223202333173. The reversal of 21223202333149 is 94133320232212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19864537011225 + 1358665321924 = 4456965^2 + 1165618^2 .

It is a cyclic number.

It is not a de Polignac number, because 21223202333149 - 2¹¹ = 21223202331101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21223202333549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611601166574 + 10611601166575.

It is an arithmetic number, because the mean of its divisors is an integer number (10611601166575).

Almost surely, 2^{21223202333149} is an apocalyptic number.

It is an amenable number.

21223202333149 is a deficient number, since it is larger than the sum of its proper divisors (1).

21223202333149 is an equidigital number, since it uses as much as digits as its factorization.

21223202333149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 21223202333149 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred two million, three hundred thirty-three thousand, one hundred forty-nine".