20000221111002 has 64 divisors (see below), whose sum is σ = 44007195184128. Its totient is φ = 6059334956400.

The previous prime is 20000221110997. The next prime is 20000221111009. The reversal of 20000221111002 is 20011112200002.

It is not an unprimeable number, because it can be changed into a prime (20000221111009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36197877 + ... + 36746247.

It is an arithmetic number, because the mean of its divisors is an integer number (687612424752).

Almost surely, 2^{20000221111002} is an apocalyptic number.

20000221111002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000221111002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22003597592064).

20000221111002 is an abundant number, since it is smaller than the sum of its proper divisors (24006974073126).

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

20000221111002 is a wasteful number, since it uses less digits than its factorization.

20000221111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552976 (or 552954 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20000221111002 its reverse (20011112200002), we get a palindrome (40011333311004).

The spelling of 20000221111002 in words is "twenty trillion, two hundred twenty-one million, one hundred eleven thousand, two".