20001011232210 has 128 divisors (see below), whose sum is σ = 50310988116480. Its totient is φ = 5082276950016.

The previous prime is 20001011232089. The next prime is 20001011232401. The reversal of 20001011232210 is 1223211010002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20001011232210.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25874842 + ... + 26636618.

It is an arithmetic number, because the mean of its divisors is an integer number (393054594660).

Almost surely, 2^{20001011232210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001011232210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25155494058240).

20001011232210 is an abundant number, since it is smaller than the sum of its proper divisors (30309976884270).

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

20001011232210 is a wasteful number, since it uses less digits than its factorization.

20001011232210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762212.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20001011232210 its reverse (1223211010002), we get a palindrome (21224222242212).

The spelling of 20001011232210 in words is "twenty trillion, one billion, eleven million, two hundred thirty-two thousand, two hundred ten".