1622211121 has 16 divisors (see below), whose sum is σ = 1719387648. Its totient is φ = 1528300800.

The previous prime is 1622211119. The next prime is 1622211131. The reversal of 1622211121 is 1211122261.

It is a cyclic number.

It is not a de Polignac number, because 1622211121 - 2¹ = 1622211119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1622211131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211465 + ... + 219001.

It is an arithmetic number, because the mean of its divisors is an integer number (107461728).

Almost surely, 2^1622211121 is an apocalyptic number.

It is an amenable number.

1622211121 is a deficient number, since it is larger than the sum of its proper divisors (97176527).

1622211121 is a wasteful number, since it uses less digits than its factorization.

1622211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752.

The product of its digits is 96, while the sum is 19.

The square root of 1622211121 is about 40276.6821001929. The cubic root of 1622211121 is about 1174.9943856077.

Adding to 1622211121 its reverse (1211122261), we get a palindrome (2833333382).

The spelling of 1622211121 in words is "one billion, six hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".