20520210000 has 100 divisors (see below), whose sum is σ = 66242070752. Its totient is φ = 5472048000.

The previous prime is 20520209987. The next prime is 20520210031. The reversal of 20520210000 is 1202502.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 312004 + ... + 372003.

Almost surely, 2^20520210000 is an apocalyptic number.

20520210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20520210000 is an abundant number, since it is smaller than the sum of its proper divisors (45721860752).

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

20520210000 is an equidigital number, since it uses as much as digits as its factorization.

20520210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684038 (or 684017 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

Adding to 20520210000 its reverse (1202502), we get a palindrome (20521412502).

The spelling of 20520210000 in words is "twenty billion, five hundred twenty million, two hundred ten thousand".