1622621121 has 8 divisors (see below), whose sum is σ = 2360176224. Its totient is φ = 983406720.

The previous prime is 1622621113. The next prime is 1622621123. The reversal of 1622621121 is 1211262261.

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

It is not a de Polignac number, because 1622621121 - 2³ = 1622621113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1622621091 and 1622621100.

It is not an unprimeable number, because it can be changed into a prime (1622621123) 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, 24585136 + ... + 24585201.

It is an arithmetic number, because the mean of its divisors is an integer number (295022028).

Almost surely, 2^1622621121 is an apocalyptic number.

1622621121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1622621121 is a deficient number, since it is larger than the sum of its proper divisors (737555103).

1622621121 is a wasteful number, since it uses less digits than its factorization.

1622621121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49170351.

The product of its digits is 576, while the sum is 24.

The square root of 1622621121 is about 40281.7715722633. The cubic root of 1622621121 is about 1175.0933671997.

Adding to 1622621121 its reverse (1211262261), we get a palindrome (2833883382).

The spelling of 1622621121 in words is "one billion, six hundred twenty-two million, six hundred twenty-one thousand, one hundred twenty-one".