20022215452 has 36 divisors (see below), whose sum is σ = 35758265200. Its totient is φ = 9807614784.

The previous prime is 20022215429. The next prime is 20022215459. The reversal of 20022215452 is 25451222002.

It is a super-2 number, since 2×20022215452² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022215459) 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, 34109103 + ... + 34109689.

Almost surely, 2^20022215452 is an apocalyptic number.

It is an amenable number.

20022215452 is a deficient number, since it is larger than the sum of its proper divisors (15736049748).

20022215452 is an equidigital number, since it uses as much as digits as its factorization.

20022215452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20022215452 its reverse (25451222002), we get a palindrome (45473437454).

The spelling of 20022215452 in words is "twenty billion, twenty-two million, two hundred fifteen thousand, four hundred fifty-two".