400220520019 has 2 divisors, whose sum is σ = 400220520020. Its totient is φ = 400220520018.

The previous prime is 400220520017. The next prime is 400220520031. The reversal of 400220520019 is 910025022004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400220520019 - 2¹ = 400220520017 is a prime.

It is a super-2 number, since 2×400220520019² (a number of 24 digits) contains 22 as substring.

Together with 400220520017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 400220519975 and 400220520002.

It is not a weakly prime, because it can be changed into another prime (400220520017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200110260009 + 200110260010.

It is an arithmetic number, because the mean of its divisors is an integer number (200110260010).

Almost surely, 2^400220520019 is an apocalyptic number.

400220520019 is a deficient number, since it is larger than the sum of its proper divisors (1).

400220520019 is an equidigital number, since it uses as much as digits as its factorization.

400220520019 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.

The spelling of 400220520019 in words is "four hundred billion, two hundred twenty million, five hundred twenty thousand, nineteen".