212412120351155 has 16 divisors (see below), whose sum is σ = 265977431058240. Its totient is φ = 162541133808768.

The previous prime is 212412120351071. The next prime is 212412120351157. The reversal of 212412120351155 is 551153021214212.

It is a cyclic number.

It is not a de Polignac number, because 212412120351155 - 2¹⁶ = 212412120285619 is a prime.

It is a super-2 number, since 2×212412120351155² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212412120351157) 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, 70489949 + ... + 73441521.

It is an arithmetic number, because the mean of its divisors is an integer number (16623589441140).

Almost surely, 2^{212412120351155} is an apocalyptic number.

212412120351155 is a deficient number, since it is larger than the sum of its proper divisors (53565310707085).

212412120351155 is a wasteful number, since it uses less digits than its factorization.

212412120351155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577390.

The product of its (nonzero) digits is 24000, while the sum is 35.

Adding to 212412120351155 its reverse (551153021214212), we get a palindrome (763565141565367).

The spelling of 212412120351155 in words is "two hundred twelve trillion, four hundred twelve billion, one hundred twenty million, three hundred fifty-one thousand, one hundred fifty-five".