1621120022 has 16 divisors (see below), whose sum is σ = 2452393152. Its totient is φ = 803666760.

The previous prime is 1621120013. The next prime is 1621120027. The reversal of 1621120022 is 2200211261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621120027) 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, 424373 + ... + 428175.

It is an arithmetic number, because the mean of its divisors is an integer number (153274572).

Almost surely, 2^1621120022 is an apocalyptic number.

1621120022 is a deficient number, since it is larger than the sum of its proper divisors (831273130).

1621120022 is a wasteful number, since it uses less digits than its factorization.

1621120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1621120022 is about 40263.1347761200. The cubic root of 1621120022 is about 1174.7308928308.

Adding to 1621120022 its reverse (2200211261), we get a palindrome (3821331283).

The spelling of 1621120022 in words is "one billion, six hundred twenty-one million, one hundred twenty thousand, twenty-two".