212233156155 has 32 divisors (see below), whose sum is σ = 390313857600. Its totient is φ = 109287876096.

The previous prime is 212233156153. The next prime is 212233156171. The reversal of 212233156155 is 551651332212.

212233156155 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 3 + 31 + 5 + 615 + 5 = 666.

It is not a de Polignac number, because 212233156155 - 2¹ = 212233156153 is a prime.

It is a super-2 number, since 2×212233156155² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212233156153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27101214 + ... + 27109043.

It is an arithmetic number, because the mean of its divisors is an integer number (12197308050).

Almost surely, 2^212233156155 is an apocalyptic number.

212233156155 is a deficient number, since it is larger than the sum of its proper divisors (178080701445).

212233156155 is a wasteful number, since it uses less digits than its factorization.

212233156155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54210300 (or 54210294 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 212233156155 its reverse (551651332212), we get a palindrome (763884488367).

The spelling of 212233156155 in words is "two hundred twelve billion, two hundred thirty-three million, one hundred fifty-six thousand, one hundred fifty-five".