22151321164012 has 24 divisors (see below), whose sum is σ = 40213233194400. Its totient is φ = 10663953651456.

The previous prime is 22151321163973. The next prime is 22151321164019. The reversal of 22151321164012 is 21046112315122.

It is a super-2 number, since 2×22151321164012² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22151321164019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265918893 + ... + 266002180.

It is an arithmetic number, because the mean of its divisors is an integer number (1675551383100).

Almost surely, 2^{22151321164012} is an apocalyptic number.

It is an amenable number.

22151321164012 is a deficient number, since it is larger than the sum of its proper divisors (18061912030388).

22151321164012 is a wasteful number, since it uses less digits than its factorization.

22151321164012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531921465 (or 531921463 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 22151321164012 its reverse (21046112315122), we get a palindrome (43197433479134).

The spelling of 22151321164012 in words is "twenty-two trillion, one hundred fifty-one billion, three hundred twenty-one million, one hundred sixty-four thousand, twelve".