1622121 has 8 divisors (see below), whose sum is σ = 2256960. Its totient is φ = 1034352.

The previous prime is 1622081. The next prime is 1622141. The reversal of 1622121 is 1212261.

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

It is not a de Polignac number, because 1622121 - 2⁷ = 1621993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1622121.

It is not an unprimeable number, because it can be changed into a prime (1622141) 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, 11686 + ... + 11823.

It is an arithmetic number, because the mean of its divisors is an integer number (282120).

2^1622121 is an apocalyptic number.

It is an amenable number.

1622121 is a deficient number, since it is larger than the sum of its proper divisors (634839).

1622121 is a wasteful number, since it uses less digits than its factorization.

1622121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23535.

The product of its digits is 48, while the sum is 15.

The square root of 1622121 is about 1273.6251410835. The cubic root of 1622121 is about 117.4972626494.

Adding to 1622121 its reverse (1212261), we get a palindrome (2834382).

The spelling of 1622121 in words is "one million, six hundred twenty-two thousand, one hundred twenty-one".