201321101029 has 2 divisors, whose sum is σ = 201321101030. Its totient is φ = 201321101028.

The previous prime is 201321100991. The next prime is 201321101039. The reversal of 201321101029 is 920101123102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145565140900 + 55755960129 = 381530^2 + 236127^2 .

It is a cyclic number.

It is not a de Polignac number, because 201321101029 - 2⁷ = 201321100901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201321101039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100660550514 + 100660550515.

It is an arithmetic number, because the mean of its divisors is an integer number (100660550515).

Almost surely, 2^201321101029 is an apocalyptic number.

It is an amenable number.

201321101029 is a deficient number, since it is larger than the sum of its proper divisors (1).

201321101029 is an equidigital number, since it uses as much as digits as its factorization.

201321101029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 201321101029 in words is "two hundred one billion, three hundred twenty-one million, one hundred one thousand, twenty-nine".