20122220019 has 12 divisors (see below), whose sum is σ = 29490416648. Its totient is φ = 12195284640.

The previous prime is 20122220011. The next prime is 20122220021. The reversal of 20122220019 is 91002222102.

It is a happy number.

It is not a de Polignac number, because 20122220019 - 2³ = 20122220011 is a prime.

It is a super-2 number, since 2×20122220019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20122219977 and 20122220004.

It is not an unprimeable number, because it can be changed into a prime (20122220011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27716194 + ... + 27716919.

Almost surely, 2^20122220019 is an apocalyptic number.

20122220019 is a deficient number, since it is larger than the sum of its proper divisors (9368196629).

20122220019 is a wasteful number, since it uses less digits than its factorization.

20122220019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55433138 (or 55433127 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 20122220019 in words is "twenty billion, one hundred twenty-two million, two hundred twenty thousand, nineteen".