201422121 has 8 divisors (see below), whose sum is σ = 268774464. Its totient is φ = 134175600.

The previous prime is 201422093. The next prime is 201422147. The reversal of 201422121 is 121224102.

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

It is not a de Polignac number, because 201422121 - 2⁶ = 201422057 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201422121.

It is not an unprimeable number, because it can be changed into a prime (201429121) 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, 21901 + ... + 29706.

It is an arithmetic number, because the mean of its divisors is an integer number (33596808).

Almost surely, 2^201422121 is an apocalyptic number.

It is an amenable number.

201422121 is a deficient number, since it is larger than the sum of its proper divisors (67352343).

201422121 is a wasteful number, since it uses less digits than its factorization.

201422121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52911.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 201422121 is about 14192.3261306947. The cubic root of 201422121 is about 586.1863775608.

Adding to 201422121 its reverse (121224102), we get a palindrome (322646223).

It can be divided in two parts, 20 and 1422121, that added together give a triangular number (1422141 = T₁₆₈₆).

The spelling of 201422121 in words is "two hundred one million, four hundred twenty-two thousand, one hundred twenty-one".