45021123101 has 2 divisors, whose sum is σ = 45021123102. Its totient is φ = 45021123100.

The previous prime is 45021123031. The next prime is 45021123113. The reversal of 45021123101 is 10132112054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41676814201 + 3344308900 = 204149^2 + 57830^2 .

It is a cyclic number.

It is not a de Polignac number, because 45021123101 - 2¹⁸ = 45020860957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45021123131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22510561550 + 22510561551.

It is an arithmetic number, because the mean of its divisors is an integer number (22510561551).

Almost surely, 2^45021123101 is an apocalyptic number.

It is an amenable number.

45021123101 is a deficient number, since it is larger than the sum of its proper divisors (1).

45021123101 is an equidigital number, since it uses as much as digits as its factorization.

45021123101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 45021123101 its reverse (10132112054), we get a palindrome (55153235155).

The spelling of 45021123101 in words is "forty-five billion, twenty-one million, one hundred twenty-three thousand, one hundred one".