212174121 has 32 divisors (see below), whose sum is σ = 314726400. Its totient is φ = 126584640.

The previous prime is 212174119. The next prime is 212174141. The reversal of 212174121 is 121471212.

It is not a de Polignac number, because 212174121 - 2¹ = 212174119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212174101) 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, 76326 + ... + 79056.

It is an arithmetic number, because the mean of its divisors is an integer number (9835200).

Almost surely, 2^212174121 is an apocalyptic number.

It is an amenable number.

212174121 is a deficient number, since it is larger than the sum of its proper divisors (102552279).

212174121 is a wasteful number, since it uses less digits than its factorization.

212174121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829.

The product of its digits is 224, while the sum is 21.

The square root of 212174121 is about 14566.1978910078. The cubic root of 212174121 is about 596.4363958903.

The spelling of 212174121 in words is "two hundred twelve million, one hundred seventy-four thousand, one hundred twenty-one".