621035240101 has 2 divisors, whose sum is σ = 621035240102. Its totient is φ = 621035240100.

The previous prime is 621035240083. The next prime is 621035240107. The reversal of 621035240101 is 101042530126.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557934302500 + 63100937601 = 746950^2 + 251199^2 .

It is a cyclic number.

It is not a de Polignac number, because 621035240101 - 2¹³ = 621035231909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621035240107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310517620050 + 310517620051.

It is an arithmetic number, because the mean of its divisors is an integer number (310517620051).

Almost surely, 2^621035240101 is an apocalyptic number.

It is an amenable number.

621035240101 is a deficient number, since it is larger than the sum of its proper divisors (1).

621035240101 is an equidigital number, since it uses as much as digits as its factorization.

621035240101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 621035240101 its reverse (101042530126), we get a palindrome (722077770227).

The spelling of 621035240101 in words is "six hundred twenty-one billion, thirty-five million, two hundred forty thousand, one hundred one".