155212374652222 has 8 divisors (see below), whose sum is σ = 242941108151376. Its totient is φ = 74232005268432.

The previous prime is 155212374652207. The next prime is 155212374652229. The reversal of 155212374652222 is 222256473212551.

155212374652222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155212374652229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687091028783 + ... + 1687091028874.

It is an arithmetic number, because the mean of its divisors is an integer number (30367638518922).

Almost surely, 2^{155212374652222} is an apocalyptic number.

155212374652222 is a deficient number, since it is larger than the sum of its proper divisors (87728733499154).

155212374652222 is a wasteful number, since it uses less digits than its factorization.

155212374652222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374182057682.

The product of its digits is 4032000, while the sum is 49.

The spelling of 155212374652222 in words is "one hundred fifty-five trillion, two hundred twelve billion, three hundred seventy-four million, six hundred fifty-two thousand, two hundred twenty-two".