422151424320021 has 16 divisors (see below), whose sum is σ = 633846126839808. Its totient is φ = 247596143295600.

The previous prime is 422151424320001. The next prime is 422151424320091. The reversal of 422151424320021 is 120023424151224.

It is not a de Polignac number, because 422151424320021 - 2³⁰ = 422150350578197 is a prime.

It is a super-3 number, since 3×422151424320021³ (a number of 45 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422151424320001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206330118391 + ... + 206330120436.

It is an arithmetic number, because the mean of its divisors is an integer number (39615382927488).

Almost surely, 2^{422151424320021} is an apocalyptic number.

It is an amenable number.

422151424320021 is a deficient number, since it is larger than the sum of its proper divisors (211694702519787).

422151424320021 is a wasteful number, since it uses less digits than its factorization.

422151424320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412660238872.

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 422151424320021 its reverse (120023424151224), we get a palindrome (542174848471245).

The spelling of 422151424320021 in words is "four hundred twenty-two trillion, one hundred fifty-one billion, four hundred twenty-four million, three hundred twenty thousand, twenty-one".