20270121 has 8 divisors (see below), whose sum is σ = 27059424. Its totient is φ = 13497120.

The previous prime is 20270119. The next prime is 20270123. The reversal of 20270121 is 12107202.

It is an interprime number because it is at equal distance from previous prime (20270119) and next prime (20270123).

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

It is not a de Polignac number, because 20270121 - 2¹ = 20270119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20270121.

It is not an unprimeable number, because it can be changed into a prime (20270123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795 + ... + 6416.

It is an arithmetic number, because the mean of its divisors is an integer number (3382428).

Almost surely, 2^20270121 is an apocalyptic number.

It is an amenable number.

20270121 is a deficient number, since it is larger than the sum of its proper divisors (6789303).

20270121 is an equidigital number, since it uses as much as digits as its factorization.

20270121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8151.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 20270121 is about 4502.2351115862. The cubic root of 20270121 is about 272.6583362837.

Adding to 20270121 its reverse (12107202), we get a palindrome (32377323).

The spelling of 20270121 in words is "twenty million, two hundred seventy thousand, one hundred twenty-one".