412155445021 has 4 divisors (see below), whose sum is σ = 412620108192. Its totient is φ = 411690781852.

The previous prime is 412155445019. The next prime is 412155445027. The reversal of 412155445021 is 120544551214.

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 412155445021 - 2¹ = 412155445019 is a prime.

It is a super-2 number, since 2×412155445021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412155445027) 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, 232330255 + ... + 232332028.

It is an arithmetic number, because the mean of its divisors is an integer number (103155027048).

Almost surely, 2^412155445021 is an apocalyptic number.

It is an amenable number.

412155445021 is a deficient number, since it is larger than the sum of its proper divisors (464663171).

412155445021 is an equidigital number, since it uses as much as digits as its factorization.

412155445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464663170.

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 412155445021 its reverse (120544551214), we get a palindrome (532699996235).

The spelling of 412155445021 in words is "four hundred twelve billion, one hundred fifty-five million, four hundred forty-five thousand, twenty-one".