19022121002 has 8 divisors (see below), whose sum is σ = 28785687876. Its totient is φ = 9426891712.

The previous prime is 19022120977. The next prime is 19022121007. The reversal of 19022121002 is 20012122091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18071693761 + 950427241 = 134431^2 + 30829^2 .

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

It is a super-3 number, since 3×19022121002³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19022121007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42084113 + ... + 42084564.

Almost surely, 2^19022121002 is an apocalyptic number.

19022121002 is a deficient number, since it is larger than the sum of its proper divisors (9763566874).

19022121002 is a wasteful number, since it uses less digits than its factorization.

19022121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84168792.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 19022121002 its reverse (20012122091), we get a palindrome (39034243093).

The spelling of 19022121002 in words is "nineteen billion, twenty-two million, one hundred twenty-one thousand, two".