81422269201 has 16 divisors (see below), whose sum is σ = 100277142784. Its totient is φ = 64380153024.

The previous prime is 81422269177. The next prime is 81422269207. The reversal of 81422269201 is 10296222418.

It is a cyclic number.

It is not a de Polignac number, because 81422269201 - 2⁷ = 81422269073 is a prime.

It is a super-2 number, since 2×81422269201² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81422269207) 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, 149526 + ... + 430351.

It is an arithmetic number, because the mean of its divisors is an integer number (6267321424).

Almost surely, 2^81422269201 is an apocalyptic number.

It is an amenable number.

81422269201 is a deficient number, since it is larger than the sum of its proper divisors (18854873583).

81422269201 is a wasteful number, since it uses less digits than its factorization.

81422269201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581440.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 81422269201 in words is "eighty-one billion, four hundred twenty-two million, two hundred sixty-nine thousand, two hundred one".