20201021211000 has 384 divisors, whose sum is σ = 74043307690560. Its totient is φ = 4571656320000.

The previous prime is 20201021210971. The next prime is 20201021211017. The reversal of 20201021211000 is 11212010202.

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 95 ways as a sum of consecutive naturals, for example, 14166694 + ... + 15527306.

Almost surely, 2^{20201021211000} is an apocalyptic number.

20201021211000 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 20201021211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37021653845280).

20201021211000 is an abundant number, since it is smaller than the sum of its proper divisors (53842286479560).

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

20201021211000 is a wasteful number, since it uses less digits than its factorization.

20201021211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360752 (or 1360731 counting only the distinct ones).

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

Adding to 20201021211000 its reverse (11212010202), we get a palindrome (20212233221202).

The spelling of 20201021211000 in words is "twenty trillion, two hundred one billion, twenty-one million, two hundred eleven thousand".