20110220019 has 6 divisors (see below), whose sum is σ = 29048095596. Its totient is φ = 13406813340.

The previous prime is 20110219991. The next prime is 20110220021. The reversal of 20110220019 is 91002201102.

It is not a de Polignac number, because 20110220019 - 2³¹ = 17962736371 is a prime.

It is a super-2 number, since 2×20110220019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110219983 and 20110220010.

It is not an unprimeable number, because it can be changed into a prime (20110220059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117234437 + ... + 1117234454.

It is an arithmetic number, because the mean of its divisors is an integer number (4841349266).

Almost surely, 2^20110220019 is an apocalyptic number.

20110220019 is a deficient number, since it is larger than the sum of its proper divisors (8937875577).

20110220019 is a wasteful number, since it uses less digits than its factorization.

20110220019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234468897 (or 2234468894 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 20110220019 in words is "twenty billion, one hundred ten million, two hundred twenty thousand, nineteen".