20020122019 has 16 divisors (see below), whose sum is σ = 21063297024. Its totient is φ = 19006747200.

The previous prime is 20020121993. The next prime is 20020122037. The reversal of 20020122019 is 91022102002.

It is not a de Polignac number, because 20020122019 - 2⁹ = 20020121507 is a prime.

It is a super-2 number, since 2×20020122019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020121987 and 20020122005.

It is not an unprimeable number, because it can be changed into a prime (20020122049) 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, 456822 + ... + 498724.

It is an arithmetic number, because the mean of its divisors is an integer number (1316456064).

Almost surely, 2^20020122019 is an apocalyptic number.

20020122019 is a deficient number, since it is larger than the sum of its proper divisors (1043175005).

20020122019 is a wasteful number, since it uses less digits than its factorization.

20020122019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42258.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20020122019 in words is "twenty billion, twenty million, one hundred twenty-two thousand, nineteen".