212146422155 has 8 divisors (see below), whose sum is σ = 265644215712. Its totient is φ = 162338131648.

The previous prime is 212146422133. The next prime is 212146422179. The reversal of 212146422155 is 551224641212.

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

It is a cyclic number.

It is not a de Polignac number, because 212146422155 - 2⁶ = 212146422091 is a prime.

It is a super-2 number, since 2×212146422155² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 922375634 + ... + 922375863.

It is an arithmetic number, because the mean of its divisors is an integer number (33205526964).

Almost surely, 2^212146422155 is an apocalyptic number.

212146422155 is a deficient number, since it is larger than the sum of its proper divisors (53497793557).

212146422155 is a wasteful number, since it uses less digits than its factorization.

212146422155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844751525.

The product of its digits is 38400, while the sum is 35.

The spelling of 212146422155 in words is "two hundred twelve billion, one hundred forty-six million, four hundred twenty-two thousand, one hundred fifty-five".