221432145326135 has 8 divisors (see below), whose sum is σ = 266002158788016. Its totient is φ = 176956659996480.

The previous prime is 221432145326129. The next prime is 221432145326191. The reversal of 221432145326135 is 531623541234122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221432145326135 - 2⁴² = 217034098815031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23632027901 + ... + 23632037270.

It is an arithmetic number, because the mean of its divisors is an integer number (33250269848502).

Almost surely, 2^{221432145326135} is an apocalyptic number.

221432145326135 is a deficient number, since it is larger than the sum of its proper divisors (44570013461881).

221432145326135 is an equidigital number, since it uses as much as digits as its factorization.

221432145326135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47264066113.

The product of its digits is 1036800, while the sum is 44.

The spelling of 221432145326135 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, one hundred forty-five million, three hundred twenty-six thousand, one hundred thirty-five".