621060121 has 4 divisors (see below), whose sum is σ = 677520144. Its totient is φ = 564600100.

The previous prime is 621060119. The next prime is 621060151. The reversal of 621060121 is 121060126.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 621060121 - 2¹ = 621060119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621060151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28229995 + ... + 28230016.

It is an arithmetic number, because the mean of its divisors is an integer number (169380036).

Almost surely, 2^621060121 is an apocalyptic number.

It is an amenable number.

621060121 is a deficient number, since it is larger than the sum of its proper divisors (56460023).

621060121 is a wasteful number, since it uses less digits than its factorization.

621060121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56460022.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 621060121 is about 24921.0778458718. The cubic root of 621060121 is about 853.1876254546.

The spelling of 621060121 in words is "six hundred twenty-one million, sixty thousand, one hundred twenty-one".