1621122 has 16 divisors (see below), whose sum is σ = 3257472. Its totient is φ = 537840.

The previous prime is 1621097. The next prime is 1621127. The reversal of 1621122 is 2211261.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1621127) 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, 1128 + ... + 2124.

It is an arithmetic number, because the mean of its divisors is an integer number (203592).

2^1621122 is an apocalyptic number.

1621122 is an abundant number, since it is smaller than the sum of its proper divisors (1636350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1621122 is a wasteful number, since it uses less digits than its factorization.

1621122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

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

The square root of 1621122 is about 1273.2328930718. The cubic root of 1621122 is about 117.4731370611.

Adding to 1621122 its reverse (2211261), we get a palindrome (3832383).

The spelling of 1621122 in words is "one million, six hundred twenty-one thousand, one hundred twenty-two".