22161024521155 has 32 divisors (see below), whose sum is σ = 30895643044224. Its totient is φ = 15111801808896.

The previous prime is 22161024521149. The next prime is 22161024521173. The reversal of 22161024521155 is 55112542016122.

It is not a de Polignac number, because 22161024521155 - 2³ = 22161024521147 is a prime.

It is a super-2 number, since 2×22161024521155² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189141679 + ... + 189258808.

It is an arithmetic number, because the mean of its divisors is an integer number (965488845132).

Almost surely, 2^{22161024521155} is an apocalyptic number.

22161024521155 is a deficient number, since it is larger than the sum of its proper divisors (8734618523069).

22161024521155 is a wasteful number, since it uses less digits than its factorization.

22161024521155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378400575.

The product of its (nonzero) digits is 48000, while the sum is 37.

Adding to 22161024521155 its reverse (55112542016122), we get a palindrome (77273566537277).

The spelling of 22161024521155 in words is "twenty-two trillion, one hundred sixty-one billion, twenty-four million, five hundred twenty-one thousand, one hundred fifty-five".