20221274372 has 12 divisors (see below), whose sum is σ = 38109324876. Its totient is φ = 9332895840.

The previous prime is 20221274369. The next prime is 20221274413. The reversal of 20221274372 is 27347212202.

It can be written as a sum of positive squares in 2 ways, for example, as 987467776 + 19233806596 = 31424^2 + 138686^2 .

It is a super-3 number, since 3×20221274372³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194435279 + ... + 194435382.

It is an arithmetic number, because the mean of its divisors is an integer number (3175777073).

Almost surely, 2^20221274372 is an apocalyptic number.

It is an amenable number.

20221274372 is a deficient number, since it is larger than the sum of its proper divisors (17888050504).

20221274372 is a wasteful number, since it uses less digits than its factorization.

20221274372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388870678 (or 388870676 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

Adding to 20221274372 its reverse (27347212202), we get a palindrome (47568486574).

The spelling of 20221274372 in words is "twenty billion, two hundred twenty-one million, two hundred seventy-four thousand, three hundred seventy-two".