20121274 has 16 divisors (see below), whose sum is σ = 31599360. Its totient is φ = 9591120.

The previous prime is 20121271. The next prime is 20121281. The reversal of 20121274 is 47212102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20121271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18847 + ... + 19885.

It is an arithmetic number, because the mean of its divisors is an integer number (1974960).

Almost surely, 2^20121274 is an apocalyptic number.

20121274 is a deficient number, since it is larger than the sum of its proper divisors (11478086).

20121274 is a wasteful number, since it uses less digits than its factorization.

20121274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20121274 is about 4485.6743082841. The cubic root of 20121274 is about 271.9893035730.

Adding to 20121274 its reverse (47212102), we get a palindrome (67333376).

The spelling of 20121274 in words is "twenty million, one hundred twenty-one thousand, two hundred seventy-four".