155205132150212 has 48 divisors (see below), whose sum is σ = 285867405867120. Its totient is φ = 73624386931200.

The previous prime is 155205132150199. The next prime is 155205132150269. The reversal of 155205132150212 is 212051231502551.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5376907641856 + 149828224508356 = 2318816^2 + 12240434^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3945239 + ... + 18054782.

It is an arithmetic number, because the mean of its divisors is an integer number (5955570955565).

Almost surely, 2^{155205132150212} is an apocalyptic number.

It is an amenable number.

155205132150212 is a deficient number, since it is larger than the sum of its proper divisors (130662273716908).

155205132150212 is a wasteful number, since it uses less digits than its factorization.

155205132150212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22001112 (or 22001110 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

Adding to 155205132150212 its reverse (212051231502551), we get a palindrome (367256363652763).

The spelling of 155205132150212 in words is "one hundred fifty-five trillion, two hundred five billion, one hundred thirty-two million, one hundred fifty thousand, two hundred twelve".