30221146477 has 2 divisors, whose sum is σ = 30221146478. Its totient is φ = 30221146476.

The previous prime is 30221146409. The next prime is 30221146513. The reversal of 30221146477 is 77464112203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17691926121 + 12529220356 = 133011^2 + 111934^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221146477 - 2¹⁹ = 30220622189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221146577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110573238 + 15110573239.

It is an arithmetic number, because the mean of its divisors is an integer number (15110573239).

Almost surely, 2^30221146477 is an apocalyptic number.

It is an amenable number.

30221146477 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221146477 is an equidigital number, since it uses as much as digits as its factorization.

30221146477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 30221146477 in words is "thirty billion, two hundred twenty-one million, one hundred forty-six thousand, four hundred seventy-seven".