20221919237 has 16 divisors (see below), whose sum is σ = 23096248560. Its totient is φ = 17539587072.

The previous prime is 20221919191. The next prime is 20221919251. The reversal of 20221919237 is 73291912202.

It can be written as a sum of positive squares in 8 ways, for example, as 2726301796 + 17495617441 = 52214^2 + 132271^2 .

It is not a de Polignac number, because 20221919237 - 2³⁰ = 19148177413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20221919237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221919537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60839 + ... + 210107.

It is an arithmetic number, because the mean of its divisors is an integer number (1443515535).

Almost surely, 2^20221919237 is an apocalyptic number.

It is an amenable number.

20221919237 is a deficient number, since it is larger than the sum of its proper divisors (2874329323).

20221919237 is a wasteful number, since it uses less digits than its factorization.

20221919237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149912.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 20221919237 in words is "twenty billion, two hundred twenty-one million, nine hundred nineteen thousand, two hundred thirty-seven".