22021001019 has 24 divisors (see below), whose sum is σ = 32300864960. Its totient is φ = 14453488368.

The previous prime is 22021001011. The next prime is 22021001047. The reversal of 22021001019 is 91010012022.

It is not a de Polignac number, because 22021001019 - 2³ = 22021001011 is a prime.

It is a super-2 number, since 2×22021001019² (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 = 22021000992 and 22021001010.

It is not an unprimeable number, because it can be changed into a prime (22021001011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1188972 + ... + 1207350.

Almost surely, 2^22021001019 is an apocalyptic number.

22021001019 is a deficient number, since it is larger than the sum of its proper divisors (10279863941).

22021001019 is a wasteful number, since it uses less digits than its factorization.

22021001019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20439 (or 20436 counting only the distinct ones).

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

The spelling of 22021001019 in words is "twenty-two billion, twenty-one million, one thousand, nineteen".