20012203552 has 36 divisors (see below), whose sum is σ = 43306375518. Its totient is φ = 9096454400.

The previous prime is 20012203517. The next prime is 20012203553. The reversal of 20012203552 is 25530221002.

It can be written as a sum of positive squares in only one way, i.e., 16745395216 + 3266808336 = 129404^2 + 57156^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20012203553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2580349 + ... + 2588092.

Almost surely, 2^20012203552 is an apocalyptic number.

20012203552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20012203552 is an abundant number, since it is smaller than the sum of its proper divisors (23294171966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012203552 is a wasteful number, since it uses less digits than its factorization.

20012203552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168473 (or 5168454 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 20012203552 its reverse (25530221002), we get a palindrome (45542424554).

The spelling of 20012203552 in words is "twenty billion, twelve million, two hundred three thousand, five hundred fifty-two".