20312210000 has 100 divisors (see below), whose sum is σ = 49476437472. Its totient is φ = 8075568000.

The previous prime is 20312209999. The next prime is 20312210063. The reversal of 20312210000 is 1221302.

It is a happy number.

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

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, 1663919 + ... + 1676081.

Almost surely, 2^20312210000 is an apocalyptic number.

20312210000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24738218736).

20312210000 is an abundant number, since it is smaller than the sum of its proper divisors (29164227472).

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

20312210000 is a wasteful number, since it uses less digits than its factorization.

20312210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358 (or 12337 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20312210000 its reverse (1221302), we get a palindrome (20313431302).

The spelling of 20312210000 in words is "twenty billion, three hundred twelve million, two hundred ten thousand".