212210000154 has 12 divisors (see below), whose sum is σ = 459788333706. Its totient is φ = 70736666712.

The previous prime is 212210000153. The next prime is 212210000221. The reversal of 212210000154 is 451000012212.

It can be written as a sum of positive squares in only one way, i.e., 115256855025 + 96953145129 = 339495^2 + 311373^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11789444453 = 212210000154 / (2 + 1 + 2 + 2 + 1 + 0 + 0 + 0 + 0 + 1 + 5 + 4).

It is not an unprimeable number, because it can be changed into a prime (212210000153) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5894722209 + ... + 5894722244.

Almost surely, 2^212210000154 is an apocalyptic number.

212210000154 is an abundant number, since it is smaller than the sum of its proper divisors (247578333552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212210000154 is a wasteful number, since it uses less digits than its factorization.

212210000154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11789444461 (or 11789444458 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 212210000154 its reverse (451000012212), we get a palindrome (663210012366).

The spelling of 212210000154 in words is "two hundred twelve billion, two hundred ten million, one hundred fifty-four", and thus it is an aban number.